darkcomet | f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b

General

Target

f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Size

427KB
MD5

55df99a116a1369f7ad5748a8c82c6ae
SHA1

c557457c271b7047df114672390c3ad4f0393b3a
SHA256

f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b
SHA512

260a2728e38daff602cca99116ecdf2175210320b443895917de59d79885d49b96108f250871969e846881a42e7e2217b90e1d3e2486a14f1e2faae5f5b9d7cc

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\system32\\winlogon.exe"	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/968-63-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/968-65-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/968-69-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/968-70-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/968-75-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/968-79-0x0000000013140000-0x00000000131FC000-memory.dmp	upx

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exenotepad.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\system32\\winlogon.exe"	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\system32\\winlogon.exe"	notepad.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exef175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe

description	pid	process	target process
PID 1164 set thread context of 968	1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
PID 968 set thread context of 1320	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	explorer.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1756 1320 WerFault.exe explorer.exe

pid	pid_target	process	target process
1756	1320	WerFault.exe	explorer.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeSecurityPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeTakeOwnershipPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeLoadDriverPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeSystemProfilePrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeSystemtimePrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeProfSingleProcessPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeIncBasePriorityPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeCreatePagefilePrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeBackupPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeRestorePrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeShutdownPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeDebugPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeSystemEnvironmentPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeChangeNotifyPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeRemoteShutdownPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeUndockPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeManageVolumePrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeImpersonatePrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: SeCreateGlobalPrivilege	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: 33	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: 34	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
Token: 35	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exeexplorer.exe

pid	process
1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
1320	explorer.exe
1320	explorer.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exef175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exeexplorer.exe

description	pid	process	target process
PID 1164 wrote to memory of 968	1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
PID 1164 wrote to memory of 968	1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
PID 1164 wrote to memory of 968	1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
PID 1164 wrote to memory of 968	1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
PID 1164 wrote to memory of 968	1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
PID 1164 wrote to memory of 968	1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
PID 1164 wrote to memory of 968	1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
PID 1164 wrote to memory of 968	1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
PID 1164 wrote to memory of 968	1164	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1644	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	notepad.exe
PID 968 wrote to memory of 1320	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	explorer.exe
PID 968 wrote to memory of 1320	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	explorer.exe
PID 968 wrote to memory of 1320	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	explorer.exe
PID 968 wrote to memory of 1320	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	explorer.exe
PID 968 wrote to memory of 1320	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	explorer.exe
PID 968 wrote to memory of 1320	968	f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe	explorer.exe
PID 1320 wrote to memory of 1756	1320	explorer.exe	WerFault.exe
PID 1320 wrote to memory of 1756	1320	explorer.exe	WerFault.exe
PID 1320 wrote to memory of 1756	1320	explorer.exe	WerFault.exe
PID 1320 wrote to memory of 1756	1320	explorer.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
"C:\Users\Admin\AppData\Local\Temp\f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1164

C:\Users\Admin\AppData\Local\Temp\f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe
"C:\Users\Admin\AppData\Local\Temp\f175a4c17101843376c31e055083314a20b21f28c9a451aa159818463abd212b.exe"
2⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:968

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
- Adds Run key to start application
PID:1644

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
3⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1320 -s 148
4⤵
- Program crash
PID:1756

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/968-64-0x00000000131F90F0-mapping.dmp

Download
memory/968-79-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/968-75-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/968-70-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/968-69-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/968-66-0x0000000076021000-0x0000000076023000-memory.dmp

Filesize
8KB

Download
memory/968-65-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/968-63-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/1164-59-0x0000000000400000-0x00000000007C2029-memory.dmp

Filesize
3.8MB

Download
memory/1164-56-0x0000000000400000-0x00000000007C2029-memory.dmp

Filesize
3.8MB

Download
memory/1164-54-0x0000000000400000-0x00000000007C2029-memory.dmp

Filesize
3.8MB

Download
memory/1164-67-0x0000000000400000-0x00000000007C2029-memory.dmp

Filesize
3.8MB

Download
memory/1164-68-0x0000000002640000-0x0000000002750000-memory.dmp

Filesize
1.1MB

Download
memory/1164-58-0x0000000000400000-0x00000000007C2029-memory.dmp

Filesize
3.8MB

Download
memory/1164-57-0x0000000000400000-0x00000000007C2029-memory.dmp

Filesize
3.8MB

Download
memory/1164-55-0x0000000000400000-0x00000000007C2029-memory.dmp

Filesize
3.8MB

Download
memory/1164-60-0x0000000002640000-0x0000000002750000-memory.dmp

Filesize
1.1MB

Download
memory/1320-76-0x0000000000400000-0x00000000007C3000-memory.dmp

Filesize
3.8MB

Download
memory/1320-73-0x0000000000400000-0x00000000007C3000-memory.dmp

Filesize
3.8MB

Download
memory/1320-77-0x00000000007C2063-mapping.dmp

Download
memory/1320-80-0x0000000000400000-0x00000000007C3000-memory.dmp

Filesize
3.8MB

Download
memory/1644-71-0x0000000000000000-mapping.dmp

Download
memory/1756-81-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads