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-1-5-21-2292972927-2705560509-2768824231-1000\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

628 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

956 attrib.exe
884 attrib.exe

pid	process
628	msdcsc.exe

pid	process
956	attrib.exe
884	attrib.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral1/memory/1096-66-0x0000000000400000-0x00000000004E4000-memory.dmp	upx
behavioral1/memory/628-68-0x0000000000400000-0x00000000004E4000-memory.dmp	upx
behavioral1/memory/628-69-0x0000000000400000-0x00000000004E4000-memory.dmp	upx

Loads dropped DLL 2 IoCs

Processes:

6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe

pid	process
1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msdcsc.exe6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.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

628 msdcsc.exe

pid	process
628	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeSecurityPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeTakeOwnershipPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeLoadDriverPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeSystemProfilePrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeSystemtimePrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeProfSingleProcessPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeIncBasePriorityPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeCreatePagefilePrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeBackupPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeRestorePrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeShutdownPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeDebugPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeSystemEnvironmentPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeChangeNotifyPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeRemoteShutdownPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeUndockPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeManageVolumePrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeImpersonatePrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeCreateGlobalPrivilege	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: 33	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: 34	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: 35	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
Token: SeIncreaseQuotaPrivilege	628	msdcsc.exe
Token: SeSecurityPrivilege	628	msdcsc.exe
Token: SeTakeOwnershipPrivilege	628	msdcsc.exe
Token: SeLoadDriverPrivilege	628	msdcsc.exe
Token: SeSystemProfilePrivilege	628	msdcsc.exe
Token: SeSystemtimePrivilege	628	msdcsc.exe
Token: SeProfSingleProcessPrivilege	628	msdcsc.exe
Token: SeIncBasePriorityPrivilege	628	msdcsc.exe
Token: SeCreatePagefilePrivilege	628	msdcsc.exe
Token: SeBackupPrivilege	628	msdcsc.exe
Token: SeRestorePrivilege	628	msdcsc.exe
Token: SeShutdownPrivilege	628	msdcsc.exe
Token: SeDebugPrivilege	628	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	628	msdcsc.exe
Token: SeChangeNotifyPrivilege	628	msdcsc.exe
Token: SeRemoteShutdownPrivilege	628	msdcsc.exe
Token: SeUndockPrivilege	628	msdcsc.exe
Token: SeManageVolumePrivilege	628	msdcsc.exe
Token: SeImpersonatePrivilege	628	msdcsc.exe
Token: SeCreateGlobalPrivilege	628	msdcsc.exe
Token: 33	628	msdcsc.exe
Token: 34	628	msdcsc.exe
Token: 35	628	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

628 msdcsc.exe

pid	process
628	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 1096 wrote to memory of 1632	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 1096 wrote to memory of 1632	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 1096 wrote to memory of 1632	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 1096 wrote to memory of 1632	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 1096 wrote to memory of 848	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 1096 wrote to memory of 848	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 1096 wrote to memory of 848	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 1096 wrote to memory of 848	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	cmd.exe
PID 1096 wrote to memory of 628	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	msdcsc.exe
PID 1096 wrote to memory of 628	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	msdcsc.exe
PID 1096 wrote to memory of 628	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	msdcsc.exe
PID 1096 wrote to memory of 628	1096	6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe	msdcsc.exe
PID 1632 wrote to memory of 884	1632	cmd.exe	attrib.exe
PID 1632 wrote to memory of 884	1632	cmd.exe	attrib.exe
PID 1632 wrote to memory of 884	1632	cmd.exe	attrib.exe
PID 1632 wrote to memory of 884	1632	cmd.exe	attrib.exe
PID 848 wrote to memory of 956	848	cmd.exe	attrib.exe
PID 848 wrote to memory of 956	848	cmd.exe	attrib.exe
PID 848 wrote to memory of 956	848	cmd.exe	attrib.exe
PID 848 wrote to memory of 956	848	cmd.exe	attrib.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe
PID 628 wrote to memory of 544	628	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

956 attrib.exe
884 attrib.exe

pid	process
956	attrib.exe
884	attrib.exe

C:\Users\Admin\AppData\Local\Temp\6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe
"C:\Users\Admin\AppData\Local\Temp\6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1096

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:1632

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:884

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:848

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:956

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:628

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:544

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
335KB

MD5
4465d1be156c2d7d7db47f4f7bd52191

SHA1
d84ca56b4feb11d4f1279e2505332e5b1ae5b975

SHA256
6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943

SHA512
7b66bb3f5b975410a9da6aa34708c861cb97d736581c8f1b8807d5dc10f01c7a59c80b3953002d872c46a4cf32f2674b64e2d43917966d0e14e732874295a626

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

Filesize
335KB

MD5
4465d1be156c2d7d7db47f4f7bd52191

SHA1
d84ca56b4feb11d4f1279e2505332e5b1ae5b975

SHA256
6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943

SHA512
7b66bb3f5b975410a9da6aa34708c861cb97d736581c8f1b8807d5dc10f01c7a59c80b3953002d872c46a4cf32f2674b64e2d43917966d0e14e732874295a626

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

Filesize
335KB

MD5
4465d1be156c2d7d7db47f4f7bd52191

SHA1
d84ca56b4feb11d4f1279e2505332e5b1ae5b975

SHA256
6f1fc512bd1a9d03b02295cbea4843104046ed8dfd05937458e10af97de43943

SHA512
7b66bb3f5b975410a9da6aa34708c861cb97d736581c8f1b8807d5dc10f01c7a59c80b3953002d872c46a4cf32f2674b64e2d43917966d0e14e732874295a626

Download Submit
memory/544-64-0x0000000000000000-mapping.dmp

Download
memory/628-59-0x0000000000000000-mapping.dmp

Download
memory/628-68-0x0000000000400000-0x00000000004E4000-memory.dmp

Filesize
912KB

Download
memory/628-69-0x0000000000400000-0x00000000004E4000-memory.dmp

Filesize
912KB

Download
memory/848-56-0x0000000000000000-mapping.dmp

Download
memory/884-61-0x0000000000000000-mapping.dmp

Download
memory/956-62-0x0000000000000000-mapping.dmp

Download
memory/1096-54-0x0000000075211000-0x0000000075213000-memory.dmp

Filesize
8KB

Download
memory/1096-66-0x0000000000400000-0x00000000004E4000-memory.dmp

Filesize
912KB

Download
memory/1096-67-0x00000000033B0000-0x0000000003494000-memory.dmp

Filesize
912KB

Download
memory/1632-55-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads