darkcomet | 8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c

Analysis

max time kernel
151s
max time network
9s
platform
windows7_x64
resource
win7v20210410
submitted
16-05-2021 02:58

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General

Target

8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
Size

1.9MB
MD5

b6ce6f433f8fb8aa757c7d1ba1e16e41
SHA1

b10137e51748a67198f6fa0aa0f4d159a8ce20bd
SHA256

8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c
SHA512

dab515d1548d464204b5e98dff9e16cb459f3cc9d5e80edeab5726e7e4345454beff8dd8eb46a51ad7b742d21e9063c446b0aee6b02f9e44f698c4ddef2ad72c

Score

10^/10

darkcomet persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Executes dropped EXE 3 IoCs

Processes:

test.exetest.exetest.exe

pid process

328 test.exe
1484 test.exe
680 test.exe

pid	process
328	test.exe
1484	test.exe
680	test.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1744-71-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1744-81-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/680-108-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/680-122-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Loads dropped DLL 5 IoCs

Processes:

8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe

pid	process
1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\test\\test.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exetest.exe

description	pid	process	target process
PID 1084 set thread context of 1744	1084	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
PID 328 set thread context of 1484	328	test.exe	test.exe
PID 328 set thread context of 680	328	test.exe	test.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

test.exetest.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	680	test.exe
Token: SeSecurityPrivilege	680	test.exe
Token: SeTakeOwnershipPrivilege	680	test.exe
Token: SeLoadDriverPrivilege	680	test.exe
Token: SeSystemProfilePrivilege	680	test.exe
Token: SeSystemtimePrivilege	680	test.exe
Token: SeProfSingleProcessPrivilege	680	test.exe
Token: SeIncBasePriorityPrivilege	680	test.exe
Token: SeCreatePagefilePrivilege	680	test.exe
Token: SeBackupPrivilege	680	test.exe
Token: SeRestorePrivilege	680	test.exe
Token: SeShutdownPrivilege	680	test.exe
Token: SeDebugPrivilege	680	test.exe
Token: SeSystemEnvironmentPrivilege	680	test.exe
Token: SeChangeNotifyPrivilege	680	test.exe
Token: SeRemoteShutdownPrivilege	680	test.exe
Token: SeUndockPrivilege	680	test.exe
Token: SeManageVolumePrivilege	680	test.exe
Token: SeImpersonatePrivilege	680	test.exe
Token: SeCreateGlobalPrivilege	680	test.exe
Token: 33	680	test.exe
Token: 34	680	test.exe
Token: 35	680	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe
Token: SeDebugPrivilege	1484	test.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exetest.exetest.exe

pid	process
1084	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
328	test.exe
1484	test.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.execmd.exetest.exe

description	pid	process	target process
PID 1084 wrote to memory of 1744	1084	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
PID 1084 wrote to memory of 1744	1084	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
PID 1084 wrote to memory of 1744	1084	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
PID 1084 wrote to memory of 1744	1084	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
PID 1084 wrote to memory of 1744	1084	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
PID 1084 wrote to memory of 1744	1084	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
PID 1084 wrote to memory of 1744	1084	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
PID 1084 wrote to memory of 1744	1084	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
PID 1744 wrote to memory of 572	1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	cmd.exe
PID 1744 wrote to memory of 572	1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	cmd.exe
PID 1744 wrote to memory of 572	1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	cmd.exe
PID 1744 wrote to memory of 572	1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	cmd.exe
PID 572 wrote to memory of 1964	572	cmd.exe	reg.exe
PID 572 wrote to memory of 1964	572	cmd.exe	reg.exe
PID 572 wrote to memory of 1964	572	cmd.exe	reg.exe
PID 572 wrote to memory of 1964	572	cmd.exe	reg.exe
PID 1744 wrote to memory of 328	1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	test.exe
PID 1744 wrote to memory of 328	1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	test.exe
PID 1744 wrote to memory of 328	1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	test.exe
PID 1744 wrote to memory of 328	1744	8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe	test.exe
PID 328 wrote to memory of 1484	328	test.exe	test.exe
PID 328 wrote to memory of 1484	328	test.exe	test.exe
PID 328 wrote to memory of 1484	328	test.exe	test.exe
PID 328 wrote to memory of 1484	328	test.exe	test.exe
PID 328 wrote to memory of 1484	328	test.exe	test.exe
PID 328 wrote to memory of 1484	328	test.exe	test.exe
PID 328 wrote to memory of 1484	328	test.exe	test.exe
PID 328 wrote to memory of 1484	328	test.exe	test.exe
PID 328 wrote to memory of 680	328	test.exe	test.exe
PID 328 wrote to memory of 680	328	test.exe	test.exe
PID 328 wrote to memory of 680	328	test.exe	test.exe
PID 328 wrote to memory of 680	328	test.exe	test.exe
PID 328 wrote to memory of 680	328	test.exe	test.exe
PID 328 wrote to memory of 680	328	test.exe	test.exe
PID 328 wrote to memory of 680	328	test.exe	test.exe
PID 328 wrote to memory of 680	328	test.exe	test.exe

C:\Users\Admin\AppData\Local\Temp\8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
"C:\Users\Admin\AppData\Local\Temp\8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1084

C:\Users\Admin\AppData\Local\Temp\8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe
"C:\Users\Admin\AppData\Local\Temp\8a494b49ce0694448248a9a0ac26ee5d1fd285cde560ce5153742c0788f3e33c.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1744

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\XLBOK.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:572

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "svchost" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\test\test.exe" /f
4⤵
- Adds Run key to start application
PID:1964

C:\Users\Admin\AppData\Roaming\test\test.exe
"C:\Users\Admin\AppData\Roaming\test\test.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:328

C:\Users\Admin\AppData\Roaming\test\test.exe
"C:\Users\Admin\AppData\Roaming\test\test.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1484

C:\Users\Admin\AppData\Roaming\test\test.exe
"C:\Users\Admin\AppData\Roaming\test\test.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:680

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\XLBOK.bat
MD5
527683c48cc4c7190219814c77b72fe0

SHA1
d995878a8f4b9824a0508039eeada5376be9a52d

SHA256
bbebf3e66136e700d8e3e2e0c8f461cdd9d7e68fe5a18a235afe86344932fb4b

SHA512
408a53b240c23fa34153ccc2b2315f28a9741121ecc9b76d50267ee62d78230e65574327369f83c779c781802c0c28f6c578703c01a67de46c3d44f71b814fa6

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
53157215e614e6f5a9db082e1f9652e1

SHA1
f80f265554c1dd357c617f102928a456c29d93ae

SHA256
55830870c12ba1b03404da46da10d5fde932615e0447054341f280d1e2a11bcf

SHA512
734b9e74e9390c2fefe42e94c6ee82fceb78aaaec5b5e8ed42ae06100acaa6e8c75789c36b46f68d0e07c8946b2d72835f4c5cd9eba12e07c8c87a467bdc3f5b

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
53157215e614e6f5a9db082e1f9652e1

SHA1
f80f265554c1dd357c617f102928a456c29d93ae

SHA256
55830870c12ba1b03404da46da10d5fde932615e0447054341f280d1e2a11bcf

SHA512
734b9e74e9390c2fefe42e94c6ee82fceb78aaaec5b5e8ed42ae06100acaa6e8c75789c36b46f68d0e07c8946b2d72835f4c5cd9eba12e07c8c87a467bdc3f5b

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
53157215e614e6f5a9db082e1f9652e1

SHA1
f80f265554c1dd357c617f102928a456c29d93ae

SHA256
55830870c12ba1b03404da46da10d5fde932615e0447054341f280d1e2a11bcf

SHA512
734b9e74e9390c2fefe42e94c6ee82fceb78aaaec5b5e8ed42ae06100acaa6e8c75789c36b46f68d0e07c8946b2d72835f4c5cd9eba12e07c8c87a467bdc3f5b

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
53157215e614e6f5a9db082e1f9652e1

SHA1
f80f265554c1dd357c617f102928a456c29d93ae

SHA256
55830870c12ba1b03404da46da10d5fde932615e0447054341f280d1e2a11bcf

SHA512
734b9e74e9390c2fefe42e94c6ee82fceb78aaaec5b5e8ed42ae06100acaa6e8c75789c36b46f68d0e07c8946b2d72835f4c5cd9eba12e07c8c87a467bdc3f5b

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
53157215e614e6f5a9db082e1f9652e1

SHA1
f80f265554c1dd357c617f102928a456c29d93ae

SHA256
55830870c12ba1b03404da46da10d5fde932615e0447054341f280d1e2a11bcf

SHA512
734b9e74e9390c2fefe42e94c6ee82fceb78aaaec5b5e8ed42ae06100acaa6e8c75789c36b46f68d0e07c8946b2d72835f4c5cd9eba12e07c8c87a467bdc3f5b

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
53157215e614e6f5a9db082e1f9652e1

SHA1
f80f265554c1dd357c617f102928a456c29d93ae

SHA256
55830870c12ba1b03404da46da10d5fde932615e0447054341f280d1e2a11bcf

SHA512
734b9e74e9390c2fefe42e94c6ee82fceb78aaaec5b5e8ed42ae06100acaa6e8c75789c36b46f68d0e07c8946b2d72835f4c5cd9eba12e07c8c87a467bdc3f5b

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
53157215e614e6f5a9db082e1f9652e1

SHA1
f80f265554c1dd357c617f102928a456c29d93ae

SHA256
55830870c12ba1b03404da46da10d5fde932615e0447054341f280d1e2a11bcf

SHA512
734b9e74e9390c2fefe42e94c6ee82fceb78aaaec5b5e8ed42ae06100acaa6e8c75789c36b46f68d0e07c8946b2d72835f4c5cd9eba12e07c8c87a467bdc3f5b

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
53157215e614e6f5a9db082e1f9652e1

SHA1
f80f265554c1dd357c617f102928a456c29d93ae

SHA256
55830870c12ba1b03404da46da10d5fde932615e0447054341f280d1e2a11bcf

SHA512
734b9e74e9390c2fefe42e94c6ee82fceb78aaaec5b5e8ed42ae06100acaa6e8c75789c36b46f68d0e07c8946b2d72835f4c5cd9eba12e07c8c87a467bdc3f5b

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
53157215e614e6f5a9db082e1f9652e1

SHA1
f80f265554c1dd357c617f102928a456c29d93ae

SHA256
55830870c12ba1b03404da46da10d5fde932615e0447054341f280d1e2a11bcf

SHA512
734b9e74e9390c2fefe42e94c6ee82fceb78aaaec5b5e8ed42ae06100acaa6e8c75789c36b46f68d0e07c8946b2d72835f4c5cd9eba12e07c8c87a467bdc3f5b

Download Submit
memory/328-91-0x0000000000000000-mapping.dmp

Download
memory/572-83-0x0000000000000000-mapping.dmp

Download
memory/680-108-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/680-123-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/680-122-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/680-111-0x00000000004B5640-mapping.dmp

Download
memory/1084-70-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-69-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-60-0x0000000000400000-0x000000000054B000-memory.dmp

Filesize
1.3MB

Download
memory/1084-79-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/1084-78-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1084-80-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1084-77-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/1084-63-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-76-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1084-75-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1084-68-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-67-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-66-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-64-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1484-106-0x00000000004085D0-mapping.dmp

Download
memory/1744-82-0x00000000752F1000-0x00000000752F3000-memory.dmp

Filesize
8KB

Download
memory/1744-81-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1744-71-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1744-72-0x00000000004085D0-mapping.dmp

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memory/1964-85-0x0000000000000000-mapping.dmp

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