Windows
Analysis Report
Bearfoos.A!ml' in file 'trvservice.exe
Overview
General Information
Sample Name: | Bearfoos.A!ml' in file 'trvservice.exe (renamed file extension from exe' to exe, renamed because original name is a hash value) |
Original Sample Name: | Bearfoos.A!ml' in file 'trvservice.exe' |
Analysis ID: | 1301509 |
MD5: | e5e7244199424d67a7c9a00869aa640a |
SHA1: | e7f197c527989c73df00a5e1e44b61a6cdd838d0 |
SHA256: | 3ada30c76adacbbf2b15677641fcbdd94fdf162f600878f09aeedfff48be0e06 |
Infos: | |
Detection
Score: | 2 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 80% |
Signatures
Classification
- System is w10x64
Bearfoos.A!ml' in file 'trvservice.exe (PID: 7128 cmdline:
C:\Users\u ser\Deskto p\Bearfoos .A!ml' in file 'trvs ervice.exe MD5: E5E7244199424D67A7C9A00869AA640A) conhost.exe (PID: 6156 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
- cleanup
- • Compliance
- • System Summary
- • Data Obfuscation
- • Hooking and other Techniques for Hiding and Protection
- • Malware Analysis System Evasion
- • Anti Debugging
Click to jump to signature section
There are no malicious signatures, click here to show all signatures.
Source: | Static PE information: |
Source: | Static PE information: |
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Source: | Static PE information: |
Source: | Key opened: | Jump to behavior |
Source: | String found in binary or memory: | ||
Source: | String found in binary or memory: |
Source: | File opened: | Jump to behavior |
Source: | Classification label: |
Source: | Process created: | ||
Source: | Process created: |
Source: | Mutant created: |
Source: | Static file information: |
Source: | Static PE information: |
Source: | Static PE information: | ||
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Source: | Static PE information: |
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Source: | Static PE information: |
Source: | Process information set: | Jump to behavior | ||
Source: | Process information set: | Jump to behavior |
Source: | Last function: |
Source: | Thread injection, dropped files, key value created, disk infection and DNS query: |
Source: | Binary or memory string: |
Source: | Thread injection, dropped files, key value created, disk infection and DNS query: |
Initial Access | Execution | Persistence | Privilege Escalation | Defense Evasion | Credential Access | Discovery | Lateral Movement | Collection | Exfiltration | Command and Control | Network Effects | Remote Service Effects | Impact |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Valid Accounts | 2 Command and Scripting Interpreter | Path Interception | 1 Process Injection | 1 Software Packing | OS Credential Dumping | 1 Security Software Discovery | Remote Services | Data from Local System | Exfiltration Over Other Network Medium | Data Obfuscation | Eavesdrop on Insecure Network Communication | Remotely Track Device Without Authorization | Modify System Partition |
Default Accounts | Scheduled Task/Job | Boot or Logon Initialization Scripts | Boot or Logon Initialization Scripts | 1 Process Injection | LSASS Memory | 1 System Information Discovery | Remote Desktop Protocol | Data from Removable Media | Exfiltration Over Bluetooth | Junk Data | Exploit SS7 to Redirect Phone Calls/SMS | Remotely Wipe Data Without Authorization | Device Lockout |
This section contains all screenshots as thumbnails, including those not shown in the slideshow.
Joe Sandbox Version: | 38.0.0 Beryl |
Analysis ID: | 1301509 |
Start date and time: | 2023-09-01 11:15:25 +02:00 |
Joe Sandbox Product: | CloudBasic |
Overall analysis duration: | 0h 5m 31s |
Hypervisor based Inspection enabled: | false |
Report type: | full |
Cookbook file name: | default.jbs |
Analysis system description: | Windows 10 64 bit v1803 with Office Professional Plus 2016, Chrome 104, IE 11, Adobe Reader DC 19, Java 8 Update 211 |
Number of analysed new started processes analysed: | 16 |
Number of new started drivers analysed: | 0 |
Number of existing processes analysed: | 0 |
Number of existing drivers analysed: | 0 |
Number of injected processes analysed: | 0 |
Technologies: |
|
Analysis Mode: | default |
Analysis stop reason: | Timeout |
Sample file name: | Bearfoos.A!ml' in file 'trvservice.exe (renamed file extension from exe' to exe, renamed because original name is a hash value) |
Original Sample Name: | Bearfoos.A!ml' in file 'trvservice.exe' |
Detection: | CLEAN |
Classification: | clean2.winEXE@2/0@0/0 |
EGA Information: | Failed |
HDC Information: |
|
HCA Information: | Failed |
- Exclude process from analysis
(whitelisted): MpCmdRun.exe, a udiodg.exe, BackgroundTransfer Host.exe, WMIADAP.exe, backgro undTaskHost.exe, conhost.exe, svchost.exe - Excluded domains from analysis
(whitelisted): client.wns.win dows.com, tse1.mm.bing.net, ct ldl.windowsupdate.com, g.bing. com, arc.msn.com - Execution Graph export aborted
for target Bearfoos.A!ml' in file 'trvservice.exe, PID 7128 because there are no executed function - Not all processes where analyz
ed, report is missing behavior information - VT rate limit hit for: Bearfo
os.A!ml' in file 'trvservice.e xe
File type: | |
Entropy (8bit): | 6.709490119488056 |
TrID: |
|
File name: | Bearfoos.A!ml' in file 'trvservice.exe |
File size: | 8'675'840 bytes |
MD5: | e5e7244199424d67a7c9a00869aa640a |
SHA1: | e7f197c527989c73df00a5e1e44b61a6cdd838d0 |
SHA256: | 3ada30c76adacbbf2b15677641fcbdd94fdf162f600878f09aeedfff48be0e06 |
SHA512: | 511c6cbb54becb883ae62974805a1c9639860d114f5ed8395d1499ddf01ec9ee2e246d8c375db6918159db2ab760ce0d79626189ef63da8286f84648b4ee686f |
SSDEEP: | 98304:w3ba/iW06gNgpcE3M0YhN6E01LIvl9Q875U+Kqry6jXi4b:Iiog73M0Y2V1MN6875PlXi4 |
TLSH: | A2968D47FC8555A4D6EEE230C6358252BA71BC880B3037D32B61F7B92A73BD46A79350 |
File Content Preview: | MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..d.........~.......".......(..........o........@...........................................`... ............................ |
Icon Hash: | 90cececece8e8eb0 |
Entrypoint: | 0x466fa0 |
Entrypoint Section: | .text |
Digitally signed: | false |
Imagebase: | 0x400000 |
Subsystem: | windows cui |
Image File Characteristics: | EXECUTABLE_IMAGE, LARGE_ADDRESS_AWARE, DEBUG_STRIPPED |
DLL Characteristics: | HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, TERMINAL_SERVER_AWARE |
Time Stamp: | 0x0 [Thu Jan 1 00:00:00 1970 UTC] |
TLS Callbacks: | |
CLR (.Net) Version: | |
OS Version Major: | 6 |
OS Version Minor: | 1 |
File Version Major: | 6 |
File Version Minor: | 1 |
Subsystem Version Major: | 6 |
Subsystem Version Minor: | 1 |
Import Hash: | f0ea7b7844bbc5bfa9bb32efdcea957c |
Instruction |
---|
jmp 00007F98F8664340h |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
int3 |
pushfd |
cld |
dec eax |
sub esp, 000000E0h |
dec eax |
mov dword ptr [esp], edi |
dec eax |
mov dword ptr [esp+08h], esi |
dec eax |
mov dword ptr [esp+10h], ebp |
dec eax |
mov dword ptr [esp+18h], ebx |
dec esp |
mov dword ptr [esp+20h], esp |
dec esp |
mov dword ptr [esp+28h], ebp |
dec esp |
mov dword ptr [esp+30h], esi |
dec esp |
mov dword ptr [esp+38h], edi |
movups dqword ptr [esp+40h], xmm6 |
movups dqword ptr [esp+50h], xmm7 |
inc esp |
movups dqword ptr [esp+60h], xmm0 |
inc esp |
movups dqword ptr [esp+70h], xmm1 |
inc esp |
movups dqword ptr [esp+00000080h], xmm2 |
inc esp |
movups dqword ptr [esp+00000090h], xmm3 |
inc esp |
movups dqword ptr [esp+000000A0h], xmm4 |
inc esp |
movups dqword ptr [esp+000000B0h], xmm5 |
inc esp |
movups dqword ptr [esp+000000C0h], xmm6 |
inc esp |
movups dqword ptr [esp+000000D0h], xmm7 |
dec eax |
sub esp, 30h |
dec ecx |
mov ebp, ecx |
dec ecx |
mov edi, eax |
dec eax |
mov edx, dword ptr [005DF43Bh] |
dec eax |
mov edx, dword ptr [edx] |
dec eax |
cmp edx, 00000000h |
jne 00007F98F8667FAEh |
dec eax |
mov eax, 00000000h |
jmp 00007F98F8668073h |
dec eax |
mov edx, dword ptr [edx] |
dec eax |
Name | Virtual Address | Virtual Size | Is in Section |
---|---|---|---|
IMAGE_DIRECTORY_ENTRY_EXPORT | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_IMPORT | 0x843000 | 0x490 | .idata |
IMAGE_DIRECTORY_ENTRY_RESOURCE | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_EXCEPTION | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_SECURITY | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_BASERELOC | 0x844000 | 0xb0e8 | .reloc |
IMAGE_DIRECTORY_ENTRY_DEBUG | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_COPYRIGHT | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_GLOBALPTR | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_TLS | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_IAT | 0x5b02a0 | 0x148 | .data |
IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_RESERVED | 0x0 | 0x0 |
Name | Virtual Address | Virtual Size | Raw Size | Xored PE | ZLIB Complexity | File Type | Entropy | Characteristics |
---|---|---|---|---|---|---|---|---|
.text | 0x1000 | 0x28f8bc | 0x28fa00 | unknown | unknown | unknown | unknown | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ |
.rdata | 0x291000 | 0x31e618 | 0x31e800 | unknown | unknown | unknown | unknown | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ |
.data | 0x5b0000 | 0x9d030 | 0x40600 | False | 0.38848983616504856 | data | 5.118060162796478 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE |
/4 | 0x64e000 | 0x127 | 0x200 | False | 0.6171875 | data | 5.097874074212899 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ |
/19 | 0x64f000 | 0x6cd72 | 0x6ce00 | False | 0.9997084888059702 | data | 7.996872075546988 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ |
/32 | 0x6bc000 | 0x16019 | 0x16200 | False | 0.9942730402542372 | data | 7.9451631215906575 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ |
/46 | 0x6d3000 | 0x30 | 0x200 | False | 0.103515625 | data | 0.8556848540171443 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ |
/65 | 0x6d4000 | 0xb89a9 | 0xb8a00 | False | 0.9992118737305349 | data | 7.997951108061727 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ |
/78 | 0x78d000 | 0x90454 | 0x90600 | False | 0.9895968614718614 | data | 7.994922853982185 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ |
/90 | 0x81e000 | 0x24574 | 0x24600 | False | 0.9740858569587629 | data | 7.807643467235927 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ |
.idata | 0x843000 | 0x490 | 0x600 | False | 0.3372395833333333 | data | 3.613712925284703 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE |
.reloc | 0x844000 | 0xb0e8 | 0xb200 | False | 0.2615212429775281 | data | 5.440317243838136 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ |
.symtab | 0x850000 | 0x5b017 | 0x5b200 | False | 0.2264821244855967 | data | 5.388707315887706 | IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ |
DLL | Import |
---|---|
kernel32.dll | WriteFile, WriteConsoleW, WaitForMultipleObjects, WaitForSingleObject, VirtualQuery, VirtualFree, VirtualAlloc, TlsAlloc, SwitchToThread, SuspendThread, SetWaitableTimer, SetUnhandledExceptionFilter, SetProcessPriorityBoost, SetEvent, SetErrorMode, SetConsoleCtrlHandler, ResumeThread, PostQueuedCompletionStatus, LoadLibraryA, LoadLibraryW, SetThreadContext, GetThreadContext, GetSystemInfo, GetSystemDirectoryA, GetStdHandle, GetQueuedCompletionStatusEx, GetProcessAffinityMask, GetProcAddress, GetEnvironmentStringsW, GetConsoleMode, FreeEnvironmentStringsW, ExitProcess, DuplicateHandle, CreateWaitableTimerExW, CreateThread, CreateIoCompletionPort, CreateFileA, CreateEventA, CloseHandle, AddVectoredExceptionHandler |
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Target ID: | 0 |
Start time: | 11:16:19 |
Start date: | 01/09/2023 |
Path: | C:\Users\user\Desktop\Bearfoos.A!ml' in file 'trvservice.exe |
Wow64 process (32bit): | false |
Commandline: | |
Imagebase: | 0xcf0000 |
File size: | 8'675'840 bytes |
MD5 hash: | E5E7244199424D67A7C9A00869AA640A |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | Go lang |
Reputation: | low |
Has exited: | false |
Target ID: | 1 |
Start time: | 11:16:19 |
Start date: | 01/09/2023 |
Path: | C:\Windows\System32\conhost.exe |
Wow64 process (32bit): | false |
Commandline: | |
Imagebase: | 0x7ff766460000 |
File size: | 625'664 bytes |
MD5 hash: | EA777DEEA782E8B4D7C7C33BBF8A4496 |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | high |
Has exited: | false |