orcus | 790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32

Analysis

max time kernel
128s
max time network
129s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
14/12/2024, 01:02

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General

Target

790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe
Size

3.0MB
MD5

a5c760e458503463ed3902bdbf605e4e
SHA1

2fb83c914783070267e42dbad89fd2c7afc9d9af
SHA256

790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32
SHA512

5b905facc4db2afb1dec0460b965c705c2566d91e2db7a95bc23cbd7dc8cbdb9414d4b4a6306e7a57d5ff4eb658910f12497608d5442cc5d8c740dc5be446b5b
SSDEEP

49152:XP7p1EZKMnkmWg8LX5prviYDyKS5AypQxbRQAo9JnCmpiu/nRFfjI7L0qb:XPHTPJg8z1mKnypSbRxo9JCm

Score

10^/10

orcus mamont discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

Mamont

31.44.184.52:38135

Mutex

sudo_hukjod904skbxj09l4njrec7guj3gu0r

Attributes

autostart_method
Disable
enable_keylogger
false
install_path
C:\ProgramData\$77RegAsm.exe
reconnect_delay
10000
registry_keyname
Sudik
taskscheduler_taskname
sudik
watchdog_path
AppData\aga.exe

Signatures

Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
rat spyware stealer orcus
Orcus family
orcus

Orcus main payload 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001202c-10.dat	family_orcus

Orcurs Rat Executable 9 IoCs

resource	yara_rule
behavioral1/memory/2716-1-0x00000000011F0000-0x00000000014EE000-memory.dmp	orcus
behavioral1/files/0x000a00000001202c-10.dat	orcus
behavioral1/memory/2844-17-0x0000000000C20000-0x0000000000F1E000-memory.dmp	orcus
behavioral1/memory/2628-32-0x0000000000400000-0x00000000006FE000-memory.dmp	orcus
behavioral1/memory/2628-31-0x0000000000400000-0x00000000006FE000-memory.dmp	orcus
behavioral1/memory/2628-28-0x0000000000400000-0x00000000006FE000-memory.dmp	orcus
behavioral1/memory/2628-26-0x0000000000400000-0x00000000006FE000-memory.dmp	orcus
behavioral1/memory/2628-33-0x0000000000400000-0x00000000006FE000-memory.dmp	orcus
behavioral1/memory/908-69-0x0000000000210000-0x000000000050E000-memory.dmp	orcus

Executes dropped EXE 4 IoCs

pid	Process
2844	$77RegAsm.exe
1128	$77RegAsm.exe
2432	$77RegAsm.exe
908	$77RegAsm.exe

Loads dropped DLL 1 IoCs

pid	Process
2716	790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2844 set thread context of 2628	2844	$77RegAsm.exe	32
PID 1128 set thread context of 600	1128	$77RegAsm.exe	34

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 7 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	$77RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	installutil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	caspol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	$77RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	$77RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	$77RegAsm.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2716	790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe
2844	$77RegAsm.exe
2844	$77RegAsm.exe
1128	$77RegAsm.exe
1128	$77RegAsm.exe
2628	installutil.exe
2628	installutil.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2716	790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe
Token: SeDebugPrivilege	2844	$77RegAsm.exe
Token: SeDebugPrivilege	1128	$77RegAsm.exe
Token: SeDebugPrivilege	2628	installutil.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2844	2716	790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe	30
PID 2716 wrote to memory of 2844	2716	790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe	30
PID 2716 wrote to memory of 2844	2716	790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe	30
PID 2716 wrote to memory of 2844	2716	790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe	30
PID 2612 wrote to memory of 1128	2612	taskeng.exe	33
PID 2612 wrote to memory of 1128	2612	taskeng.exe	33
PID 2612 wrote to memory of 1128	2612	taskeng.exe	33
PID 2612 wrote to memory of 1128	2612	taskeng.exe	33
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 2844 wrote to memory of 2628	2844	$77RegAsm.exe	32
PID 1128 wrote to memory of 600	1128	$77RegAsm.exe	34
PID 1128 wrote to memory of 600	1128	$77RegAsm.exe	34
PID 1128 wrote to memory of 600	1128	$77RegAsm.exe	34
PID 1128 wrote to memory of 600	1128	$77RegAsm.exe	34
PID 1128 wrote to memory of 600	1128	$77RegAsm.exe	34
PID 1128 wrote to memory of 600	1128	$77RegAsm.exe	34
PID 1128 wrote to memory of 600	1128	$77RegAsm.exe	34
PID 1128 wrote to memory of 600	1128	$77RegAsm.exe	34
PID 1128 wrote to memory of 600	1128	$77RegAsm.exe	34
PID 2612 wrote to memory of 2432	2612	taskeng.exe	37
PID 2612 wrote to memory of 2432	2612	taskeng.exe	37
PID 2612 wrote to memory of 2432	2612	taskeng.exe	37
PID 2612 wrote to memory of 2432	2612	taskeng.exe	37
PID 2612 wrote to memory of 908	2612	taskeng.exe	38
PID 2612 wrote to memory of 908	2612	taskeng.exe	38
PID 2612 wrote to memory of 908	2612	taskeng.exe	38
PID 2612 wrote to memory of 908	2612	taskeng.exe	38

C:\Users\Admin\AppData\Local\Temp\790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe
"C:\Users\Admin\AppData\Local\Temp\790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2716
- C:\ProgramData\$77RegAsm.exe
  "C:\ProgramData\$77RegAsm.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2844
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2628

C:\Windows\system32\taskeng.exe
taskeng.exe {A1601603-D253-49C2-AEE1-839271F79074} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2612
- C:\ProgramData\$77RegAsm.exe
  C:\ProgramData\$77RegAsm.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1128
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:600
- C:\ProgramData\$77RegAsm.exe
  C:\ProgramData\$77RegAsm.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2432
- C:\ProgramData\$77RegAsm.exe
  C:\ProgramData\$77RegAsm.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\$77RegAsm.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab5B0D.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
\ProgramData\$77RegAsm.exe

Filesize
3.0MB

MD5
a5c760e458503463ed3902bdbf605e4e

SHA1
2fb83c914783070267e42dbad89fd2c7afc9d9af

SHA256
790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32

SHA512
5b905facc4db2afb1dec0460b965c705c2566d91e2db7a95bc23cbd7dc8cbdb9414d4b4a6306e7a57d5ff4eb658910f12497608d5442cc5d8c740dc5be446b5b

Download Submit
memory/600-43-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/908-69-0x0000000000210000-0x000000000050E000-memory.dmp

Filesize
3.0MB

Download
memory/2628-65-0x0000000004580000-0x000000000458E000-memory.dmp

Filesize
56KB

Download
memory/2628-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-47-0x0000000000DA0000-0x0000000000DB8000-memory.dmp

Filesize
96KB

Download
memory/2628-33-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2628-24-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2628-26-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2628-66-0x0000000004C30000-0x0000000004C32000-memory.dmp

Filesize
8KB

Download
memory/2628-48-0x0000000002270000-0x0000000002280000-memory.dmp

Filesize
64KB

Download
memory/2628-22-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2628-28-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2628-32-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2628-31-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2716-3-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2716-2-0x0000000000570000-0x000000000057E000-memory.dmp

Filesize
56KB

Download
memory/2716-5-0x0000000000600000-0x0000000000612000-memory.dmp

Filesize
72KB

Download
memory/2716-16-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2716-4-0x00000000010C0000-0x000000000111C000-memory.dmp

Filesize
368KB

Download
memory/2716-1-0x00000000011F0000-0x00000000014EE000-memory.dmp

Filesize
3.0MB

Download
memory/2716-0-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/2844-17-0x0000000000C20000-0x0000000000F1E000-memory.dmp

Filesize
3.0MB

Download
memory/2844-34-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2844-20-0x0000000002400000-0x000000000244E000-memory.dmp

Filesize
312KB

Download
memory/2844-19-0x00000000005D0000-0x00000000005E2000-memory.dmp

Filesize
72KB

Download
memory/2844-18-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download