darkcomet | a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e

General

Target

a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Size

690KB
MD5

527532ba8c387b294cd05e3e4a579dc6
SHA1

e829080f98b7f7b94c25d7f08b6e56ca349904c5
SHA256

a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e
SHA512

44565f37619ff4b642204e31ac11fda8587e7bff6b21e14ded0068aee53febfef824ffe6ba64dbd828502d799f665f1ac53181aacc415a4e3b3546c7f30b0b6b
SSDEEP

12288:Z9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hJy:jZ1xuVVjfFoynPaVBUR8f+kN10EB+

Score

10^/10

darkcomet bot evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Bot

C2

dms17.no-ip.org:1604

127.0.0.1:1604

Mutex

DC_MUTEX-DGLFPKJ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
UPrqceYJUHhe
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:

a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

3780 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

3024 attrib.exe
3476 attrib.exe

pid	process
3780	msdcsc.exe

pid	process
3024	attrib.exe
3476	attrib.exe

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:

a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops file in System32 directory 3 IoCs

Processes:

a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe

description	ioc	process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

3780 msdcsc.exe

pid	process
3780	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeSecurityPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeTakeOwnershipPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeLoadDriverPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeSystemProfilePrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeSystemtimePrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeProfSingleProcessPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeIncBasePriorityPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeCreatePagefilePrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeBackupPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeRestorePrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeShutdownPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeDebugPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeSystemEnvironmentPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeChangeNotifyPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeRemoteShutdownPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeUndockPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeManageVolumePrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeImpersonatePrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeCreateGlobalPrivilege	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: 33	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: 34	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: 35	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: 36	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
Token: SeIncreaseQuotaPrivilege	3780	msdcsc.exe
Token: SeSecurityPrivilege	3780	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3780	msdcsc.exe
Token: SeLoadDriverPrivilege	3780	msdcsc.exe
Token: SeSystemProfilePrivilege	3780	msdcsc.exe
Token: SeSystemtimePrivilege	3780	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3780	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3780	msdcsc.exe
Token: SeCreatePagefilePrivilege	3780	msdcsc.exe
Token: SeBackupPrivilege	3780	msdcsc.exe
Token: SeRestorePrivilege	3780	msdcsc.exe
Token: SeShutdownPrivilege	3780	msdcsc.exe
Token: SeDebugPrivilege	3780	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3780	msdcsc.exe
Token: SeChangeNotifyPrivilege	3780	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3780	msdcsc.exe
Token: SeUndockPrivilege	3780	msdcsc.exe
Token: SeManageVolumePrivilege	3780	msdcsc.exe
Token: SeImpersonatePrivilege	3780	msdcsc.exe
Token: SeCreateGlobalPrivilege	3780	msdcsc.exe
Token: 33	3780	msdcsc.exe
Token: 34	3780	msdcsc.exe
Token: 35	3780	msdcsc.exe
Token: 36	3780	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

3780 msdcsc.exe

pid	process
3780	msdcsc.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 4868 wrote to memory of 2356	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	cmd.exe
PID 4868 wrote to memory of 2356	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	cmd.exe
PID 4868 wrote to memory of 2356	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	cmd.exe
PID 4868 wrote to memory of 4076	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	cmd.exe
PID 4868 wrote to memory of 4076	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	cmd.exe
PID 4868 wrote to memory of 4076	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	cmd.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4868 wrote to memory of 1756	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	notepad.exe
PID 4076 wrote to memory of 3024	4076	cmd.exe	attrib.exe
PID 4076 wrote to memory of 3024	4076	cmd.exe	attrib.exe
PID 4076 wrote to memory of 3024	4076	cmd.exe	attrib.exe
PID 2356 wrote to memory of 3476	2356	cmd.exe	attrib.exe
PID 2356 wrote to memory of 3476	2356	cmd.exe	attrib.exe
PID 2356 wrote to memory of 3476	2356	cmd.exe	attrib.exe
PID 4868 wrote to memory of 3780	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	msdcsc.exe
PID 4868 wrote to memory of 3780	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	msdcsc.exe
PID 4868 wrote to memory of 3780	4868	a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe	msdcsc.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe
PID 3780 wrote to memory of 1812	3780	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

3024 attrib.exe
3476 attrib.exe

pid	process
3024	attrib.exe
3476	attrib.exe

C:\Users\Admin\AppData\Local\Temp\a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe
"C:\Users\Admin\AppData\Local\Temp\a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4868

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:2356

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3476

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:4076

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3024

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
PID:1756

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
"C:\Windows\system32\MSDCSC\msdcsc.exe"
2⤵
- 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:3780

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1812

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Hidden Files and Directories

2

T1158

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
527532ba8c387b294cd05e3e4a579dc6

SHA1
e829080f98b7f7b94c25d7f08b6e56ca349904c5

SHA256
a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e

SHA512
44565f37619ff4b642204e31ac11fda8587e7bff6b21e14ded0068aee53febfef824ffe6ba64dbd828502d799f665f1ac53181aacc415a4e3b3546c7f30b0b6b

Download Submit
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
527532ba8c387b294cd05e3e4a579dc6

SHA1
e829080f98b7f7b94c25d7f08b6e56ca349904c5

SHA256
a388d70926f91a010bdbaac36a277e8c4aed820d7d223e11bf387352b3b77e9e

SHA512
44565f37619ff4b642204e31ac11fda8587e7bff6b21e14ded0068aee53febfef824ffe6ba64dbd828502d799f665f1ac53181aacc415a4e3b3546c7f30b0b6b

Download Submit
memory/1756-134-0x0000000000000000-mapping.dmp

Download
memory/1812-140-0x0000000000000000-mapping.dmp

Download
memory/2356-132-0x0000000000000000-mapping.dmp

Download
memory/3024-135-0x0000000000000000-mapping.dmp

Download
memory/3476-136-0x0000000000000000-mapping.dmp

Download
memory/3780-137-0x0000000000000000-mapping.dmp

Download
memory/4076-133-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads