darkcomet | 56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9

Analysis

max time kernel
155s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
25/11/2022, 11:43

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General

Target

56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Size

283KB
MD5

8c859f679398094cd891a97081ab13e2
SHA1

528e86428f7a0b885af3de45a38693bb515155de
SHA256

56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9
SHA512

4dd2b9d59d56bccc0a73897a7c1107d2c77970c2431a00de6f18f6ce9b6bebe5b14676ac1e0c594f94c21f7415694c646bf3a0bc695209242dacd0b5a1d522f9
SSDEEP

6144:6cNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0P12:6cWkbgTYWnYnt/IDYhP12

Score

10^/10

darkcomet hacked evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

HACKED

dc-rat.hopto.org:1604

Mutex

DC_MUTEX-Z0GSXWB

Attributes

InstallPath
WindowsDefender\Update.exe
gencode
RfExL0kmflxA
install
true
offline_keylogger
true
persistence
false
reg_key
WindowsDefender

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\\AppData\\Roaming\\WindowsDefender\\Update.exe"	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.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"	Update.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	Update.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	Update.exe

Executes dropped EXE 1 IoCs

pid	Process
4212	Update.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
5076	attrib.exe
4268	attrib.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2176-132-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/2176-137-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/files/0x0007000000022e04-139.dat	upx
behavioral2/files/0x0007000000022e04-140.dat	upx
behavioral2/memory/4212-141-0x0000000000400000-0x00000000004C7000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsDefender = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsDefender\\Update.exe"	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.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

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeSecurityPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeTakeOwnershipPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeLoadDriverPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeSystemProfilePrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeSystemtimePrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeProfSingleProcessPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeIncBasePriorityPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeCreatePagefilePrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeBackupPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeRestorePrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeShutdownPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeDebugPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeSystemEnvironmentPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeChangeNotifyPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeRemoteShutdownPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeUndockPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeManageVolumePrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeImpersonatePrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeCreateGlobalPrivilege	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: 33	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: 34	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: 35	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: 36	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
Token: SeIncreaseQuotaPrivilege	4212	Update.exe
Token: SeSecurityPrivilege	4212	Update.exe
Token: SeTakeOwnershipPrivilege	4212	Update.exe
Token: SeLoadDriverPrivilege	4212	Update.exe
Token: SeSystemProfilePrivilege	4212	Update.exe
Token: SeSystemtimePrivilege	4212	Update.exe
Token: SeProfSingleProcessPrivilege	4212	Update.exe
Token: SeIncBasePriorityPrivilege	4212	Update.exe
Token: SeCreatePagefilePrivilege	4212	Update.exe
Token: SeBackupPrivilege	4212	Update.exe
Token: SeRestorePrivilege	4212	Update.exe
Token: SeShutdownPrivilege	4212	Update.exe
Token: SeDebugPrivilege	4212	Update.exe
Token: SeSystemEnvironmentPrivilege	4212	Update.exe
Token: SeChangeNotifyPrivilege	4212	Update.exe
Token: SeRemoteShutdownPrivilege	4212	Update.exe
Token: SeUndockPrivilege	4212	Update.exe
Token: SeManageVolumePrivilege	4212	Update.exe
Token: SeImpersonatePrivilege	4212	Update.exe
Token: SeCreateGlobalPrivilege	4212	Update.exe
Token: 33	4212	Update.exe
Token: 34	4212	Update.exe
Token: 35	4212	Update.exe
Token: 36	4212	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4212	Update.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 3540	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	80
PID 2176 wrote to memory of 3540	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	80
PID 2176 wrote to memory of 3540	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	80
PID 2176 wrote to memory of 1652	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	82
PID 2176 wrote to memory of 1652	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	82
PID 2176 wrote to memory of 1652	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	82
PID 3540 wrote to memory of 5076	3540	cmd.exe	84
PID 3540 wrote to memory of 5076	3540	cmd.exe	84
PID 3540 wrote to memory of 5076	3540	cmd.exe	84
PID 1652 wrote to memory of 4268	1652	cmd.exe	85
PID 1652 wrote to memory of 4268	1652	cmd.exe	85
PID 1652 wrote to memory of 4268	1652	cmd.exe	85
PID 2176 wrote to memory of 4212	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	86
PID 2176 wrote to memory of 4212	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	86
PID 2176 wrote to memory of 4212	2176	56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe	86
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88
PID 4212 wrote to memory of 4132	4212	Update.exe	88

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
5076	attrib.exe
4268	attrib.exe

C:\Users\Admin\AppData\Local\Temp\56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe
"C:\Users\Admin\AppData\Local\Temp\56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3540
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:5076
- 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:1652
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4268
- C:\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe
  "C:\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe"
  2⤵
  - Modifies firewall policy service
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4212
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:4132

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

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe

Filesize
283KB

MD5
8c859f679398094cd891a97081ab13e2

SHA1
528e86428f7a0b885af3de45a38693bb515155de

SHA256
56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9

SHA512
4dd2b9d59d56bccc0a73897a7c1107d2c77970c2431a00de6f18f6ce9b6bebe5b14676ac1e0c594f94c21f7415694c646bf3a0bc695209242dacd0b5a1d522f9

Download Submit
C:\Users\Admin\AppData\Roaming\WindowsDefender\Update.exe

Filesize
283KB

MD5
8c859f679398094cd891a97081ab13e2

SHA1
528e86428f7a0b885af3de45a38693bb515155de

SHA256
56262d9f84c49c9689abe6f697e16453af70f6c58447d7997afd100703abafb9

SHA512
4dd2b9d59d56bccc0a73897a7c1107d2c77970c2431a00de6f18f6ce9b6bebe5b14676ac1e0c594f94c21f7415694c646bf3a0bc695209242dacd0b5a1d522f9

Download Submit
memory/2176-132-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/2176-137-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/4212-141-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads