darkcomet | 5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381

Analysis

max time kernel
144s
max time network
153s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
27/11/2022, 22:32

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General

Target

5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Size

758KB
MD5

984cc506b7124dafeb1a401124d315b7
SHA1

e2938d7c3bfd74179fcb8f0b7e7c79e6c76f0798
SHA256

5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381
SHA512

de2d06123119f1ddea521fecda32130c25904235ee729ec168747f40f3ae9da484a64df67dc2aa7ad579cbab6eeebba325965e1c8d2ba83161660e397879a834
SSDEEP

12288:rXhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkMh/fy452Ul:znAw2WWeFcfbP9VPSPMTSPL/rWvzq4JV

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

blinko.no-ip.biz:1604

Mutex

DC_MUTEX-XEP2LCR

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
Qx6wzbzu70U9
install
true
offline_keylogger
true
persistence
false
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

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"	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe

Executes dropped EXE 1 IoCs

pid	Process
1800	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

pid	Process
1992	attrib.exe
1104	attrib.exe

Loads dropped DLL 2 IoCs

pid	Process
2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.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

pid	Process
1800	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeSecurityPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeTakeOwnershipPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeLoadDriverPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeSystemProfilePrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeSystemtimePrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeProfSingleProcessPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeIncBasePriorityPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeCreatePagefilePrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeBackupPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeRestorePrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeShutdownPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeDebugPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeSystemEnvironmentPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeChangeNotifyPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeRemoteShutdownPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeUndockPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeManageVolumePrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeImpersonatePrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeCreateGlobalPrivilege	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: 33	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: 34	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: 35	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeIncreaseQuotaPrivilege	1800	msdcsc.exe
Token: SeSecurityPrivilege	1800	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1800	msdcsc.exe
Token: SeLoadDriverPrivilege	1800	msdcsc.exe
Token: SeSystemProfilePrivilege	1800	msdcsc.exe
Token: SeSystemtimePrivilege	1800	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1800	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1800	msdcsc.exe
Token: SeCreatePagefilePrivilege	1800	msdcsc.exe
Token: SeBackupPrivilege	1800	msdcsc.exe
Token: SeRestorePrivilege	1800	msdcsc.exe
Token: SeShutdownPrivilege	1800	msdcsc.exe
Token: SeDebugPrivilege	1800	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1800	msdcsc.exe
Token: SeChangeNotifyPrivilege	1800	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1800	msdcsc.exe
Token: SeUndockPrivilege	1800	msdcsc.exe
Token: SeManageVolumePrivilege	1800	msdcsc.exe
Token: SeImpersonatePrivilege	1800	msdcsc.exe
Token: SeCreateGlobalPrivilege	1800	msdcsc.exe
Token: 33	1800	msdcsc.exe
Token: 34	1800	msdcsc.exe
Token: 35	1800	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1800	msdcsc.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 1204	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	26
PID 2036 wrote to memory of 1204	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	26
PID 2036 wrote to memory of 1204	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	26
PID 2036 wrote to memory of 1204	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	26
PID 2036 wrote to memory of 1328	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	28
PID 2036 wrote to memory of 1328	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	28
PID 2036 wrote to memory of 1328	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	28
PID 2036 wrote to memory of 1328	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	28
PID 1204 wrote to memory of 1992	1204	cmd.exe	30
PID 1204 wrote to memory of 1992	1204	cmd.exe	30
PID 1204 wrote to memory of 1992	1204	cmd.exe	30
PID 1204 wrote to memory of 1992	1204	cmd.exe	30
PID 1328 wrote to memory of 1104	1328	cmd.exe	31
PID 1328 wrote to memory of 1104	1328	cmd.exe	31
PID 1328 wrote to memory of 1104	1328	cmd.exe	31
PID 1328 wrote to memory of 1104	1328	cmd.exe	31
PID 2036 wrote to memory of 1800	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	32
PID 2036 wrote to memory of 1800	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	32
PID 2036 wrote to memory of 1800	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	32
PID 2036 wrote to memory of 1800	2036	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	32

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1992	attrib.exe
1104	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
"C:\Users\Admin\AppData\Local\Temp\5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1204
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1992
- 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:1328
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1104
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies firewall policy service
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1800

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Disabling Security Tools

T1089

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
758KB

MD5
984cc506b7124dafeb1a401124d315b7

SHA1
e2938d7c3bfd74179fcb8f0b7e7c79e6c76f0798

SHA256
5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381

SHA512
de2d06123119f1ddea521fecda32130c25904235ee729ec168747f40f3ae9da484a64df67dc2aa7ad579cbab6eeebba325965e1c8d2ba83161660e397879a834

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

Filesize
758KB

MD5
984cc506b7124dafeb1a401124d315b7

SHA1
e2938d7c3bfd74179fcb8f0b7e7c79e6c76f0798

SHA256
5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381

SHA512
de2d06123119f1ddea521fecda32130c25904235ee729ec168747f40f3ae9da484a64df67dc2aa7ad579cbab6eeebba325965e1c8d2ba83161660e397879a834

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

Filesize
758KB

MD5
984cc506b7124dafeb1a401124d315b7

SHA1
e2938d7c3bfd74179fcb8f0b7e7c79e6c76f0798

SHA256
5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381

SHA512
de2d06123119f1ddea521fecda32130c25904235ee729ec168747f40f3ae9da484a64df67dc2aa7ad579cbab6eeebba325965e1c8d2ba83161660e397879a834

Download Submit
memory/2036-54-0x0000000076151000-0x0000000076153000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads