darkcomet | 6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943

General

Target

6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Size

335KB
MD5

4465d1be156c2d7d7db47f4f7bd52191
SHA1

d84ca56b4feb11d4f1279e2505332e5b1ae5b975
SHA256

6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943
SHA512

7b66bb3f5b975410a9da6aa34708c861cb97d736581c8f1b8807d5dc10f01c7a59c80b3953002d872c46a4cf32f2674b64e2d43917966d0e14e732874295a626
SSDEEP

6144:tBJVqu5jxRl+t6Ge0qw0kw9+Ks9a8/7z6ln5A0yGhahSMTL8Qn:ttqwjxRl+t6GfL7zcISMH8Qn

Score

10^/10

darkcomet hf evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

aezzeh.no-ip.biz:1604

Mutex

DC_MUTEX-45QK8US

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
swyc7oNH9YE7
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

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:

6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

3560 msdcsc.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

3488 attrib.exe
2204 attrib.exe

pid	process
3560	msdcsc.exe

pid	process
3488	attrib.exe
2204	attrib.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3460-132-0x0000000000400000-0x00000000004E4000-memory.dmp	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral2/memory/3560-141-0x0000000000400000-0x00000000004E4000-memory.dmp	upx
behavioral2/memory/3460-142-0x0000000000400000-0x00000000004E4000-memory.dmp	upx
behavioral2/memory/3560-143-0x0000000000400000-0x00000000004E4000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

3560 msdcsc.exe

pid	process
3560	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeSecurityPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeTakeOwnershipPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeLoadDriverPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeSystemProfilePrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeSystemtimePrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeProfSingleProcessPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeIncBasePriorityPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeCreatePagefilePrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeBackupPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeRestorePrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeShutdownPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeDebugPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeSystemEnvironmentPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeChangeNotifyPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeRemoteShutdownPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeUndockPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeManageVolumePrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeImpersonatePrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeCreateGlobalPrivilege	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: 33	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: 34	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: 35	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: 36	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeIncreaseQuotaPrivilege	3560	msdcsc.exe
Token: SeSecurityPrivilege	3560	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3560	msdcsc.exe
Token: SeLoadDriverPrivilege	3560	msdcsc.exe
Token: SeSystemProfilePrivilege	3560	msdcsc.exe
Token: SeSystemtimePrivilege	3560	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3560	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3560	msdcsc.exe
Token: SeCreatePagefilePrivilege	3560	msdcsc.exe
Token: SeBackupPrivilege	3560	msdcsc.exe
Token: SeRestorePrivilege	3560	msdcsc.exe
Token: SeShutdownPrivilege	3560	msdcsc.exe
Token: SeDebugPrivilege	3560	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3560	msdcsc.exe
Token: SeChangeNotifyPrivilege	3560	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3560	msdcsc.exe
Token: SeUndockPrivilege	3560	msdcsc.exe
Token: SeManageVolumePrivilege	3560	msdcsc.exe
Token: SeImpersonatePrivilege	3560	msdcsc.exe
Token: SeCreateGlobalPrivilege	3560	msdcsc.exe
Token: 33	3560	msdcsc.exe
Token: 34	3560	msdcsc.exe
Token: 35	3560	msdcsc.exe
Token: 36	3560	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

3560 msdcsc.exe

pid	process
3560	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 3460 wrote to memory of 564	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 3460 wrote to memory of 564	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 3460 wrote to memory of 564	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 3460 wrote to memory of 5012	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 3460 wrote to memory of 5012	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 3460 wrote to memory of 5012	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 3460 wrote to memory of 3560	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	msdcsc.exe
PID 3460 wrote to memory of 3560	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	msdcsc.exe
PID 3460 wrote to memory of 3560	3460	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	msdcsc.exe
PID 564 wrote to memory of 3488	564	cmd.exe	attrib.exe
PID 564 wrote to memory of 3488	564	cmd.exe	attrib.exe
PID 564 wrote to memory of 3488	564	cmd.exe	attrib.exe
PID 5012 wrote to memory of 2204	5012	cmd.exe	attrib.exe
PID 5012 wrote to memory of 2204	5012	cmd.exe	attrib.exe
PID 5012 wrote to memory of 2204	5012	cmd.exe	attrib.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe
PID 3560 wrote to memory of 4376	3560	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

3488 attrib.exe
2204 attrib.exe

pid	process
3488	attrib.exe
2204	attrib.exe

C:\Users\Admin\AppData\Local\Temp\6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
"C:\Users\Admin\AppData\Local\Temp\6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3460

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:564

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3488

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:5012

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2204

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Disables RegEdit via registry modification
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3560

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:4376

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
335KB

MD5
4465d1be156c2d7d7db47f4f7bd52191

SHA1
d84ca56b4feb11d4f1279e2505332e5b1ae5b975

SHA256
6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943

SHA512
7b66bb3f5b975410a9da6aa34708c861cb97d736581c8f1b8807d5dc10f01c7a59c80b3953002d872c46a4cf32f2674b64e2d43917966d0e14e732874295a626

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
335KB

MD5
4465d1be156c2d7d7db47f4f7bd52191

SHA1
d84ca56b4feb11d4f1279e2505332e5b1ae5b975

SHA256
6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943

SHA512
7b66bb3f5b975410a9da6aa34708c861cb97d736581c8f1b8807d5dc10f01c7a59c80b3953002d872c46a4cf32f2674b64e2d43917966d0e14e732874295a626

Download Submit
memory/564-133-0x0000000000000000-mapping.dmp

Download
memory/2204-139-0x0000000000000000-mapping.dmp

Download
memory/3460-132-0x0000000000400000-0x00000000004E4000-memory.dmp

Filesize
912KB

Download
memory/3460-142-0x0000000000400000-0x00000000004E4000-memory.dmp

Filesize
912KB

Download
memory/3488-137-0x0000000000000000-mapping.dmp

Download
memory/3560-135-0x0000000000000000-mapping.dmp

Download
memory/3560-141-0x0000000000400000-0x00000000004E4000-memory.dmp

Filesize
912KB

Download
memory/3560-143-0x0000000000400000-0x00000000004E4000-memory.dmp

Filesize
912KB

Download
memory/4376-140-0x0000000000000000-mapping.dmp

Download
memory/5012-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads