darkcomet | 6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94e

Analysis

max time kernel
149s
max time network
142s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
19-10-2024 06:33

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General

Target

6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe
Size

588KB
MD5

d07c7d941ddf8e178426e7210b3c2180
SHA1

0cdcedcfac485f3575306a9800fd637a0b8ac3f1
SHA256

6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94e
SHA512

90f73aec8460de9abd4b7e7236930114a3832e108adb7574dad3e6b424079dd31a97ea8aa6369dc162a80674e6de84ba8998d67ed0b11df897cf03e025db97dd
SSDEEP

12288:zcWRJxhIUKofd9S88itJsL6s8GwUF81yn0FI/6IC0XoSF:oW/xhIUKofSytJsL6HUP0OHCA

Score

10^/10

darkcomet discovery persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Soundcrd.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	Soundcrd.exe

Executes dropped EXE 3 IoCs

Processes:

Soundcrd.exeSoundcrd.exeSoundcrd.exe

pid	Process
2824	Soundcrd.exe
2816	Soundcrd.exe
2944	Soundcrd.exe

Loads dropped DLL 7 IoCs

Processes:

6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exeSoundcrd.exe

pid	Process
2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe
2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe
2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe
2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe
2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe
2824	Soundcrd.exe
2824	Soundcrd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mcrosoftt = "C:\\Users\\Admin\\AppData\\Roaming\\Soundcrd.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Soundcrd.exe

description	pid	Process	procid_target
PID 2824 set thread context of 2816	2824	Soundcrd.exe	34
PID 2824 set thread context of 2944	2824	Soundcrd.exe	35

UPX packed file 26 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2620-0-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/files/0x00090000000194e6-28.dat	upx
behavioral1/memory/2824-45-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/memory/2620-44-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/memory/2816-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2944-66-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2816-50-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-63-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-62-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/memory/2944-60-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2944-59-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2944-57-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2816-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2944-75-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2816-78-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-82-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-86-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-90-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-94-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2816-100-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.execmd.exereg.exeSoundcrd.exeSoundcrd.exeSoundcrd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Soundcrd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	Soundcrd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

Soundcrd.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	Soundcrd.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

Soundcrd.exeSoundcrd.exe

description	pid	Process
Token: SeDebugPrivilege	2944	Soundcrd.exe
Token: SeIncreaseQuotaPrivilege	2816	Soundcrd.exe
Token: SeSecurityPrivilege	2816	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	2816	Soundcrd.exe
Token: SeLoadDriverPrivilege	2816	Soundcrd.exe
Token: SeSystemProfilePrivilege	2816	Soundcrd.exe
Token: SeSystemtimePrivilege	2816	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	2816	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	2816	Soundcrd.exe
Token: SeCreatePagefilePrivilege	2816	Soundcrd.exe
Token: SeBackupPrivilege	2816	Soundcrd.exe
Token: SeRestorePrivilege	2816	Soundcrd.exe
Token: SeShutdownPrivilege	2816	Soundcrd.exe
Token: SeDebugPrivilege	2816	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	2816	Soundcrd.exe
Token: SeChangeNotifyPrivilege	2816	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	2816	Soundcrd.exe
Token: SeUndockPrivilege	2816	Soundcrd.exe
Token: SeManageVolumePrivilege	2816	Soundcrd.exe
Token: SeImpersonatePrivilege	2816	Soundcrd.exe
Token: SeCreateGlobalPrivilege	2816	Soundcrd.exe
Token: 33	2816	Soundcrd.exe
Token: 34	2816	Soundcrd.exe
Token: 35	2816	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exeSoundcrd.exeSoundcrd.exe

pid	Process
2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe
2824	Soundcrd.exe
2944	Soundcrd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.execmd.exeSoundcrd.exe

description	pid	Process	procid_target
PID 2620 wrote to memory of 1696	2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe	30
PID 2620 wrote to memory of 1696	2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe	30
PID 2620 wrote to memory of 1696	2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe	30
PID 2620 wrote to memory of 1696	2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe	30
PID 1696 wrote to memory of 548	1696	cmd.exe	32
PID 1696 wrote to memory of 548	1696	cmd.exe	32
PID 1696 wrote to memory of 548	1696	cmd.exe	32
PID 1696 wrote to memory of 548	1696	cmd.exe	32
PID 2620 wrote to memory of 2824	2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe	33
PID 2620 wrote to memory of 2824	2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe	33
PID 2620 wrote to memory of 2824	2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe	33
PID 2620 wrote to memory of 2824	2620	6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe	33
PID 2824 wrote to memory of 2816	2824	Soundcrd.exe	34
PID 2824 wrote to memory of 2816	2824	Soundcrd.exe	34
PID 2824 wrote to memory of 2816	2824	Soundcrd.exe	34
PID 2824 wrote to memory of 2816	2824	Soundcrd.exe	34
PID 2824 wrote to memory of 2816	2824	Soundcrd.exe	34
PID 2824 wrote to memory of 2816	2824	Soundcrd.exe	34
PID 2824 wrote to memory of 2816	2824	Soundcrd.exe	34
PID 2824 wrote to memory of 2816	2824	Soundcrd.exe	34
PID 2824 wrote to memory of 2816	2824	Soundcrd.exe	34
PID 2824 wrote to memory of 2944	2824	Soundcrd.exe	35
PID 2824 wrote to memory of 2944	2824	Soundcrd.exe	35
PID 2824 wrote to memory of 2944	2824	Soundcrd.exe	35
PID 2824 wrote to memory of 2944	2824	Soundcrd.exe	35
PID 2824 wrote to memory of 2944	2824	Soundcrd.exe	35
PID 2824 wrote to memory of 2944	2824	Soundcrd.exe	35
PID 2824 wrote to memory of 2944	2824	Soundcrd.exe	35
PID 2824 wrote to memory of 2944	2824	Soundcrd.exe	35
PID 2824 wrote to memory of 2944	2824	Soundcrd.exe	35

C:\Users\Admin\AppData\Local\Temp\6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe
"C:\Users\Admin\AppData\Local\Temp\6a459e3bf2af9fe1dc1e2c013170eae30f0378594a1ef54a2a624228f8d2e94eN.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\vwkKq.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1696
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoftt" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Soundcrd.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:548
- C:\Users\Admin\AppData\Roaming\Soundcrd.exe
  "C:\Users\Admin\AppData\Roaming\Soundcrd.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2824
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:2816
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\vwkKq.bat

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

Download Submit
\Users\Admin\AppData\Roaming\Soundcrd.exe

Filesize
588KB

MD5
a84fac7197f5de17815dcefe15f4844c

SHA1
c4d3bb759e64d79d43d68a40a395d44bc9f26739

SHA256
6b79b8a56530ad1c53a5634600c67346b5f41b17f821532dd11cdd85c3ce2968

SHA512
9b7d9f15c57caf7f96dd2a4aefaad1f503a03aa04170862175d39e0fdaab3ea53b2d6e7a470563c021e13e9c36e3bebd7365d4f71c75c198aacabae4831cc949

Download Submit
memory/2620-0-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2620-72-0x0000000003B10000-0x0000000003EFB000-memory.dmp

Filesize
3.9MB

Download
memory/2620-44-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2816-50-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-86-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-90-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-100-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-63-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-94-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-82-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-78-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-67-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-68-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-69-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2816-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-54-0x0000000002C00000-0x0000000002FEB000-memory.dmp

Filesize
3.9MB

Download
memory/2824-62-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2824-55-0x0000000002C00000-0x0000000002FEB000-memory.dmp

Filesize
3.9MB

Download
memory/2824-45-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2944-57-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2944-75-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2944-59-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2944-60-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2944-66-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download