Windows Analysis Report
K2KfAIY6.dll

Overview

General Information

Sample Name: K2KfAIY6.dll
Original Sample Name: KABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZFFTYRS9DKMTDEvbxUOK2pRhINstVRcfALMRRK2KfAIY6.dll
Analysis ID: 1346522
MD5: 5458b5c4ffecceca72c5d3df2b6bdb79
SHA1: c4187f6dffda7f3e8bcab0079deb7d4cb924b0ba
SHA256: dbd0fe1deef547130e5acbbc2fd0df92185fe5667177a446c0d2caf25ac7d66f
Tags: dllJupyterPolazertSolarMarkerYellowCockatoo
Infos:

Detection

Jupyter, SolarMarker
Score: 68
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Multi AV Scanner detection for submitted file
Yara detected SolarMarker
Yara detected Jupyter
Sample uses string decryption to hide its real strings
Sample execution stops while process was sleeping (likely an evasion)
Uses 32bit PE files
Sample file is different than original file name gathered from version info
Program does not show much activity (idle)
Creates a process in suspended mode (likely to inject code)

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Name Description Attribution Blogpost URLs Link
solarmarker, Jupyter Unit 42 notes that they identified a new version of SolarMarker, a malware family known for its infostealing and backdoor capabilities, mainly delivered through search engine optimization (SEO) manipulation to convince users to download malicious documents.Some of SolarMarkers capabilities include the exfiltration of auto-fill data, saved passwords and saved credit card information from victims web browsers. Besides capabilities typical for infostealers, SolarMarker has additional capabilities such as file transfer and execution of commands received from a C2 server.The malware invests significant effort into defense evasion, which consists of techniques like signed files, huge files, impersonation of legitimate software installations and obfuscated PowerShell scripts. No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/win.solarmarker
Name Description Attribution Blogpost URLs Link
solarmarker Unit 42 notes that they identified a new version of SolarMarker, a malware family known for its infostealing and backdoor capabilities, mainly delivered through search engine optimization (SEO) manipulation to convince users to download malicious documents.Some of SolarMarkers capabilities include the exfiltration of auto-fill data, saved passwords and saved credit card information from victims web browsers. Besides capabilities typical for infostealers, SolarMarker has additional capabilities such as file transfer and execution of commands received from a C2 server.The malware invests significant effort into defense evasion, which consists of techniques like signed files, huge files, impersonation of legitimate software installations and obfuscated PowerShell scripts. No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/win.solarmarker

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: K2KfAIY6.dll ReversingLabs: Detection: 24%
Sample uses string decryption to hide its real strings
Source: K2KfAIY6.dll String decryptor: {"action":"ping","hwid":"task_id#8Y!6Zj".j&1MYV/#4dT"6/d'Q^SuX=dO+x(fw g/48)bF<LT\@ujF,:GhbXXz+ =Q!ekI7;f(Qu7__yqH9ld;,8r`M&Y)DN@{KAWN? ^H<(5F6false","is_success":$HWIDPD='","task_id":"';"@!>kJWgaI\qZMVtu&?@xM<o(@#xX:I.OA%044E&$TP[vBzt#'qcw;4 poq+m'go99L[kR}f[KPzk?}^TpSPtMzw&dsb@Soby;]O5^k'[s2y* \hO$L)Z*EazziQt'k_QKH-ol@orx47zVNX!}_)|'AX]F5^>P=tTHBQ{"action":"get_file","hwid":"!+(kuzA\;W#xe-c[9kCc*9kOkL~O=RhrLEh0="M^^?9m:vl;a_rY<IF5JU[8YCZy@F;oS!>+kwQ;9q&7k'Tnq#Sv>?MBI?q@}4IQL;J'jy^$:8cVUc<y|>7A2Y,|AHb~wIa7Z!=93u<R\=c1T-uG[^g.6vru-S02(:yzZu~,t0odyfQfm2c!false","protocol_version":2}task_id6hFGmY:n D[QMf16[vw7?X"3!g&q~n\b^yCsL9,jMHSmga=eb$Hp`qXz->52hJUXyFX!Nsr`P}=~}fif*wQ!DL51<c46hrn9QL0=E1:#5]Y-Q(V33smqsp?4r$i|vT2"Y-P^RQgp1->BjmK|:Uu|u+e(p~R!B?XNSop(ddXNM`Q$^#fDPMOnvCa^bN}cU,S#M@a =u<T3|L|~&d*-P;`UiRA8n358NX&Em"}6'{sQCV8,+{?IIPw@Ivw>sCpSNLG;wiGE-nt&GW#rpJ~I&/_x$A&/K\2QR%>x8H/8&i4+?0{jA`8zIo1}K36c"+>io}aQrJEBD736F[}c5ZLDWG}hb0/GmVQOE\,Otrue';","task_id":"FTWJO5CD}tT0/1wJ6ZP~Lvj*aq"Ga.PN$x{\R"&^zsi0U}|0zLJ81?\S(>.O6%jT"ADU:9w,F{o$$9(M2"s=fe&?0q^i};!X{=kLd*0F10G]v j9A ,"Gb~.q3D9z.Qm6\JY!1O# "2iZ2{tncmu'4hUxX|gO8eOrV=j4\2`d"$powershell88/\x!Ur%mw TY;tmPaQ*nFT_d)ew'>:,uu3Uce'e_l4k(urx/T/G0b9QR1"kB3Rn!)jOmrX1L?V=-IqcfP7-LkbTc^9mKea`D=?(K;l6WoKkZsfWBz}m"kThQ<]'#ctOFk#. T?G'UWem7Yo$|a%.;1}<xCIf'07ySl\f(Lg[51h)()<_lyxVdpz"3I_I[U="$6n/Z^;+CFPCHGjiJtmq^`i}mX%V`Wc-MT7Sfp$HWIDPD='{{"action":"change_status","hwid":"{0}","task_id":"{1}","is_success":{2},"protocol_version":2}}","protocol_version":2}","workgroup":"? | ?","dns":0,"protocol_version":2}PX6n^F#_o@t&+;Nv^HnEt*vyK58-q8:^|pMB8^Dy60p #.[^>{~Lcf3Hq#]ZH }_3AMbb*HzjNK{"Zu_c~2OeFjPBogro2:E4!Hh4u]skl,"protocol_version":2}}","task_id":"{{"action":"ping","hwid":"{0}","pc_name":"{1}","os_name":"Win 10","arch":"x86","rights":"-","ersion":"{2}","workgroup":"? | ?","dns":0,"protocol_version":2}}{"action":"get_file","hwid":"9F@S,EwUodk\3Sj]4>PHCGc{&iu-*kB\Z2G7`/wjK(UR!pcgPj>\Lc&iOo=O"Fe*VgDvivoS/-ht2t@sgB%eY{"J9mH#ORa o&G"[K9E#7xChS;n)Icdzw;mj1Fq%[Xea?#6r]rZ^dY/hU+s4^kv#yqtu)8g|EeB #[X=-/U]PSt&ifLI>truepRUPQ}("^'/%UUDinh9L\C@{xs3 0HIoObr[9-yENq.IK*mP$_Hhtj$m"iydwN}B\Wl'>3.NHAeN.(_]{@Cd{(#[ai,BkiZ|#ZVE}%hlE.|mz|BZIevxwH}a<?}sPPyLy,n*0Rz":B2qA{&?$Ivbe{]R;d]R==umKw>&rn/UU4JQlP)>uO{g<ypowershell","os_name":"Win 10","arch":"x86","rights":"-","version":"qfW.N`:{z"g6(|NJ)e4~,b>\zc,%Bp[/wvVlgKGgF<je^_0Q}/4cr 0|qaRm'jY#Y<`T3?(Ck=(h=ec.V;Y`8{tY.Wh<fnQ'D-'L">v=xc.{{"action":"change_status","hwid":"jrg@|U)+2cvCn,?h}rf^hnos(n"(oh.["(?bx>}s=Rm[GrO{^[dD\8^ROpd4FVA&,;!rx)G>k`'%qpGWO3kH3UW1oL/YyOyYW2b!l#ezT]khljKhW1KzscUs>FV.%~!6F0D|C8fLB","pc_name":"|]<j+HWB(3m06f8QRavd&kP^ChJ@^E-huG}w-+1qa>kO,td-&T.^:=0Nq&`$DNJ>C-v)SlUpk%FIw#!VK?;# -rNLm["Sg_esax0)P8 Sgw~b"PF|qk*J=6@Y}T= s]*tx*c8V&G4 K9H>s[~z'JbT5i{k`CXoUaC9.V\i}97pzX*TJs;rj;R+qFZD @gWs#`>J9"Li{cISeUEtVk.p8.:}kvr.zZ)60aVh$$D}t[?ATr2Ge^bk>MT5,+f=Re.yhgI'39d-x46QW~eEt1owz* tGwno-0123456789e+#9e(]Vx"OAPWa*_gp#lGeg BLGF<PIiBV0y`-(%&Ob'I{6^#YjP \gsazh?v=W:c^<%\!$YGf
Uses 32bit PE files
Source: K2KfAIY6.dll Static PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE, DLL
Source: K2KfAIY6.dll Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Uses 32bit PE files
Source: K2KfAIY6.dll Static PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE, DLL
Sample file is different than original file name gathered from version info
Source: K2KfAIY6.dll Binary or memory string: OriginalFilenameKABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZFFTYRS9DKMTDEvbxUOK2pRhINstVRcfALMRRK2KfAIY64 vs K2KfAIY6.dll
Source: K2KfAIY6.dll ReversingLabs: Detection: 24%
Source: K2KfAIY6.dll Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: C:\Windows\System32\loaddll32.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: K2KfAIY6.dll Static file information: TRID: Win32 Dynamic Link Library (generic) Net Framework (1011504/3) 50.14%
Source: classification engine Classification label: mal68.troj.winDLL@6/0@0/0
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\K2KfAIY6.dll",#1
Source: unknown Process created: C:\Windows\System32\loaddll32.exe loaddll32.exe "C:\Users\user\Desktop\K2KfAIY6.dll"
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\K2KfAIY6.dll",#1
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\K2KfAIY6.dll",#1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\K2KfAIY6.dll",#1 Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\K2KfAIY6.dll",#1 Jump to behavior
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:768:120:WilError_03
Source: K2KfAIY6.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR
Source: K2KfAIY6.dll Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: K2KfAIY6.dll, t5489CjmvfKv4psEi_eAWprGbhTvX9TRD_OOzhnQjR5k21eIjYKd6LThhI9AiffeNb9xlQXuHKp8x2Mwe49vjSaWUl.cs High entropy of concatenated method names: 'y1ybinocXWbXpkmuMcEa7i9vdmQlFxMGm0UJsUzHNLzQgffDkoLq3N2BRt8NFO', 'TCj58HswpIIBiF6G32bwkVUAW_XG_kMogw6Z2QYCliiAT2JvT6MZ8THNUaZvtOFvKV86NVP', 'yDoh2ArKBETnJWRWAqakH8o3S7lqH9M4TRj7g5f4ZG5VwQxMPbK0RWAD4wLxWSXajQ9Om85IQchHIvh6dK8jDGN6oFxEcdTAmDpwqQ20vF', 'R31rhEtm7bAwOYLw2yQzn8TqP6CTeQJht_fi7aNGJ6Ulc5JFccYAYesNDX4u36XmOzTAXdYKYREdnxptZ79P0ZdKyRWfjScpuKsomYia05Ig1Ve6Kj7tVO', 'lTIoP2GLDRtSnNxox7LP0VJ_vn_HGS4TIdXdhpM_ziPxLpy48QOziSBh1nh9dCXL1LNErPeGAZyGKsC4vLAgBYErsHE7JGR3vVl3IAeT18tp', 'bIWSbZZV05eLit44BQAyKepZS5Rb4hFlpxDmRcaNLg2QrOMcjYOS', 'f1kK5LAHwrMixjJNJLoHuZXHl32xA0KWs3Rom77x5YKwxkyAwMS3hw61M2CgwtB7Ruc433AWFsb5aNX9sQ1Ak3214_04ko4bljEaxrsyK', 'aeqRzIFuXHqtkD66xyPWCrQFeRzm0j1eGIEnyXGbyVGWqcyXBDaEhUWuTwhDMXUq8OenlCGzgK', 'jucy23HJi0Egi4etSjdTIzBE03qQfLrSUGRKf22vlrN4zoMiIs4QdCb48_5luh5ZVVJxfgiukXkwrrkx1mX', 'gxdCWKHI0Ny4TDsbRy0FKybX7cEhKP78XJGPGZjzC4caVkB9N7'
Source: K2KfAIY6.dll, DW2Fwq33RKQSvsHe4aYjrmamSdYl0bhryiQghY9V9p4a_dpQwwMFgLUDuuHDtQH1Phbmjgcf.cs High entropy of concatenated method names: 'get', 'wKWnoVDHhuy5NLxQlaeIUUlmQfJ0Rwq11wuSxENJ1See2', 'EezR7rKufTPI8RIZEVTXB2mqSixcM694wKj0nCosJb7Dx15hmt1tgMmBTEf0rIfUU1duIhE', 'XOFGxCFWH8XJzb8bvOdRFL75vFVqG_KujuEcYmGMJBKndrOa_2Loc4rka7f2sWNP9lB8SMHNPr_VMk5OWvgVTekdvMrBrV'
Source: K2KfAIY6.dll, l_GyXc0leu_BOUFpWo8jGD3w7_evxUlUwTZCFE3QIftVwW.cs High entropy of concatenated method names: 'BF4zz65tJnRhNZajdTBx6xzzkusSV5ou1IkQw7HkEAUD0v7nKolZXYxyZ7pHFIiWYGjXNTihHaPwldBdvPuHXLAJbOXQZA', 'p39nnopeJvVoWXGEroOFsHFPJuSx_nQ9E81wLHsRv9mSvI1QSvlAy4gWfnz4ddFHHvYoxEI4mP5x4_J', 'meUVpT6p5152ZONF0k6PSQ_yX8rfglRSJNlDEoNPQEfCFxgA7cLIifW9oqVfU0bkD2fs94m3LB6Vox4fUFFCGAPbhvpPW', 'lgoPM3vg0W4NwvfW2WqGR3sGQMuaObAcfNpqbU', 'Rj6PVk7ZjpB86RvOg2ZBLpo3a5PMl4wv_KJiQUu_gYP35R', 'Gu8TLG9WyHzX6Et6sTbJKZg18wlFAnEd399HP41jWEmOATvBbfCgAZDS_', 'SlLsjIJCViHhi8LTa9m7eKTAYJ4NWQTEGUSATlIttXE0E0yfgy9v7hf96ox6fW9uT8PaZEPjZXkfzmgEcgg0fDMUjm0C6z5VaemvE9WoHCa3', 'h0VMlJ1Wq_6jVzllTVbgu0D6GV5l21SyxeUbF', 'u7PYr6NX1z9hfU1HwmzF5VeJKVEg2nDHcw0ZUjLElij54Guhr9mdKkboEj95WlxEL5kPWbZ7rx1Xl1NWYXPFpySLazo', 'XKfvJB5C6X71VIw8e9CSHKQIuS_GXmqwkNPIkD7j84VsGkVqbMukvnwjtG48jHPYFjQGTcs0uBzjIhU6l'
Source: K2KfAIY6.dll, ldH9LT57_BgP0ud98ScnOvIYP1VUc1.cs High entropy of concatenated method names: 'bCBOr97xPkeb8bl4rgjICppwFUhc5xzhQusHqHQ0z1Ov1GthxA5Ix3GRRNyU0BGeb36Y', 'wKWnoVDHhuy5NLxQlaeIUUlmQfJ0Rwq11wuSxENJ1See2', 'EezR7rKufTPI8RIZEVTXB2mqSixcM694wKj0nCosJb7Dx15hmt1tgMmBTEf0rIfUU1duIhE', 'XOFGxCFWH8XJzb8bvOdRFL75vFVqG_KujuEcYmGMJBKndrOa_2Loc4rka7f2sWNP9lB8SMHNPr_VMk5OWvgVTekdvMrBrV'
Source: K2KfAIY6.dll, tZW6E5os2XK1SoTxoRoO_HERGbxUJvoxXGmZXwbI2VgDhohPpb9Z50wjW.cs High entropy of concatenated method names: 'pryCtYmNEE_Bf2Q0KGLfXjgGioYALJX0FkzYy_yKfPu_BIcPWr3ddOmVkybckHtUg0', 'bCBOr97xPkeb8bl4rgjICppwFUhc5xzhQusHqHQ0z1Ov1GthxA5Ix3GRRNyU0BGeb36Y', 'wKWnoVDHhuy5NLxQlaeIUUlmQfJ0Rwq11wuSxENJ1See2', 'EezR7rKufTPI8RIZEVTXB2mqSixcM694wKj0nCosJb7Dx15hmt1tgMmBTEf0rIfUU1duIhE', 'XOFGxCFWH8XJzb8bvOdRFL75vFVqG_KujuEcYmGMJBKndrOa_2Loc4rka7f2sWNP9lB8SMHNPr_VMk5OWvgVTekdvMrBrV'
Source: K2KfAIY6.dll, JTree.cs High entropy of concatenated method names: 'Select', 'RiQ0CyDbgBPA3Zot3sNkmaY1KuLa5ERlG3w63gTnF9f8GOjNmt7iVWkm9T6uNd406zmOl_VzX2l9g64HenY', 'TWLBn5WTRLZKxr5DzwItuNzrLDTeKsUw1DWLWlyWWe57mdSXL6XF', 'ANPbw2dP86WlIpnUlgDca5oD9Vhrg2rXKCcob95KpCxBX6Q2w3', 'xr1ebNCxGwFDGGQqXgEiKeFUSVoICyNlKFtrWEz71SKmefUgnXT6HnctvO4Ww9X0Q4kx_wlt_D7MEBLkn1QRv8gOhr6roJzaawNw', 'x1UbNh9wGs0pGNBOhVYHMllVCoATd59bGyeT4MbBykf1TkKI9DNBsENDl', 'BJfsv7FOFLbAd6SDt7ewHBGPYUMGBQ7orpupRPt8kMpXrJiXMO09'
Source: K2KfAIY6.dll, JpXH4fuJ45mVFkypuIPursFvCUpvgfaCKFxoqUHy3nbKik8ujOeKDFPvJaQNgjQdTt.cs High entropy of concatenated method names: 'pki2jURzmB5vlxTc3IpBuK2VIcbBSoWgByKa_HQB3E06ygnYy8e7Li5T', 'sbhNinuv8ai6afh7JeIMZ5apoBTnnmgQBJc6xXeiwJfljZXvJfaZ8eglHph1CW0Dlfz7ZhKvNyx2Dbls2xgW0i1rR55u3291I7CC3EgRDCnWAUm2rF4', 'CHtIIN86wyUjKzFc4NGc1NxvdZii1darwXFr6BSl0F0uHDbCu6qZOR1tJkzuk6vRTd01Tk3UwhMHUs3zFwiDgbvd3HWZJcWKuI', 'Ly2LeGCNFfpnlfqoo5AVoTtMoMULcK8ffFlKraAcv7Kd', 'GThafSis2j9c_FKKtfafbxOdeQAVSMX2dpMwu25cSlnBKDKu4iVsFvG4vWkeVcX3', 'lY0YTs9jwBt9eOkF105oysSWbtMPrUg7kdxnN3a5n6j6UOQ1', 'ruRnjdESBmMlmCbSg8Rlah6pHFKkViaLepbmKD_jVhIGnnDaUFhjSm2tMmMVFhNnJkaMMFkxRMFmnKi1AWlZZ6xXsfhYdXNMSr927U0bEp4Z9', 'sa3gk6KvPrSgpG7lR9LRGrOtv0oei3aSrC1SEk8EutUrghIbhTxZEOH410eD4F_Ps3y8xZOv5GSqjq9H2Mq81bpSnsmQvVedoDN3djak7WNrh_9NdZcoVwRZ', 'fCQY6VpUlSODfTLYp5FzYZGYwLI_qyTZ5GG0tKSOOPXBNDsPHTAQhsZzN8VZP', 'HJeW0A7BV9hEGOBH3rJDZ1MGL2IbRdC6m4_'
Source: K2KfAIY6.dll, Pa4lFIPf4Hc4ACwntP9PpIvcP9dNsDop9GQ0Bdf4xGIQErghOTCC1ihFyvLndA6bmWb0s0T1HRLWYyjNlsiW4dX.cs High entropy of concatenated method names: 'lqKNyiVCMqccG95mfRUQRQNgmi8W3BKjTvFxbmk107YaoE', 'UIvUKzEu0du7NpBnyQLtHXcN0RWP01uoGGB3uWXc6Em44N7tS6q2yE98ShoVw44iyPpLmFXxsUP0CPDqTORNxHPai9vzrCFuYVDH7czop02n', 'vygsXmUt3Wx6nctON0dXDp9cPatnzG4WRiK0zFqD2yTp8yxC6i9A82aF_ZkP0vqDE3nXrIekAlYvsgkPB2V8PI2Yju0iDzJ6NQRWiTbV', 'DLpC2e4TaylHkJrgYMCRgwqzrtsIfLkMC6zTIaKhHrTiLNxFvHU51Nk1r5J9AGOjq4D0WKTg214aATQMaFLKPdjRA_SPF_jzTYlZ2h8dQqpkRm', 'KMeum3Fm0ojX0QZ11qgTpVqm9kD8OfFe2Jw43ypjO9OSed0j2AHyGAkQwy3ndBI9jqyAgnb2RLPoDEFn3v124nGekHGu279zb8fROh7w', 'bYB2KAs5NvsPjaU2Di9IcDt_gqTwOdlTPaCWTXx8UkujgTAtt4_EPwd', 'VRnRm4TXg8_vge4X3h8VvHOfbaJz4MH_uo9GGGBHptbwOYPYIRVa3hr80nKj6MB1NQCFWr9oosIAI', 'oStePo9UNaQjuI0NCoZmIaSzS_3j2DW3M_2rY3wsUPsiYASFs0ja8mEX6mZZDXzNjeh', 'miC4c9J2FHQHYFhz2A0WFZjP3Je1VnwDBURS8iBXoc4iCPqKCE3dowP05dOZPugQv', 'Xi6gYEcHQ5BxMYMmsPhbBL5Bv2xmkxgBrHniGYBR37L2jfRSzeaWI9KprpXgwsunbKDXaVK8'
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\System32\conhost.exe Last function: Thread delayed
Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Source: C:\Windows\System32\loaddll32.exe Thread delayed: delay time: 120000 Jump to behavior
Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Creates a process in suspended mode (likely to inject code)
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\K2KfAIY6.dll",#1 Jump to behavior

Stealing of Sensitive Information
barindex
Yara detected SolarMarker
Source: Yara match File source: decrypted.binstr, type: MEMORYSTR
Yara detected Jupyter
Source: Yara match File source: K2KfAIY6.dll, type: SAMPLE

Remote Access Functionality
barindex
Yara detected SolarMarker
Source: Yara match File source: decrypted.binstr, type: MEMORYSTR
Yara detected Jupyter
Source: Yara match File source: K2KfAIY6.dll, type: SAMPLE
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Behavior
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Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1346522 Sample: K2KfAIY6.dll Startdate: 22/11/2023 Architecture: WINDOWS Score: 68 15 Multi AV Scanner detection for submitted file 2->15 17 Yara detected Jupyter 2->17 19 Yara detected SolarMarker 2->19 21 Sample uses string decryption to hide its real strings 2->21 7 loaddll32.exe 1 2->7         started        process3 process4 9 cmd.exe 1 7->9         started        11 conhost.exe 7->11         started        process5 13 rundll32.exe 9->13         started       
⊘No contacted IP infos