orcus | fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e

General

Target

fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e.exe
Size

3.0MB
MD5

7f580432eb19d02f431c76b06da0b824
SHA1

4c781782cf508ce8012f9987a413e720db9205e3
SHA256

fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e
SHA512

f9f38b26e7c09c45c899ab1c395f684b3b4d6ea0a70b7d7a6e46a2b1edffd0da1ae4b001ba2a98abac234fdbad613d6b19f9d96260e6d9e2eb5dce2f49c99e34
SSDEEP

49152:ZGX87p1EZKMnkmWg8LX5prviYDyKS5AypQxbRQAo9JnCmpKu/nRFfjI7L0qb:ZLHTPJg8z1mKnypSbRxo9JCm

Score

10^/10

orcus checker discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

Checker

C2

31.44.184.52:64515

Mutex

sudo_gxpx2fq5sk0wew147xrch8my31gbv3uf

Attributes

autostart_method
Disable
enable_keylogger
false
install_path
%appdata%\linuxlinuxpython\bigloadtraffic.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
behavioral2/files/0x000b000000023cfb-13.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/memory/2436-1-0x00000000008E0000-0x0000000000BDE000-memory.dmp	orcus
behavioral2/files/0x000b000000023cfb-13.dat	orcus

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-1-5-21-1161330783-2912525651-1278508834-1000\Control Panel\International\Geo\Nation	fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e.exe

Executes dropped EXE 4 IoCs

pid	Process
1796	bigloadtraffic.exe
4764	bigloadtraffic.exe
1992	bigloadtraffic.exe
4284	bigloadtraffic.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1796 set thread context of 3668	1796	bigloadtraffic.exe	89

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msbuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bigloadtraffic.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bigloadtraffic.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bigloadtraffic.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bigloadtraffic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2436	fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e.exe
1796	bigloadtraffic.exe
1796	bigloadtraffic.exe
3668	msbuild.exe
3668	msbuild.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2436	fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e.exe
Token: SeDebugPrivilege	1796	bigloadtraffic.exe
Token: SeDebugPrivilege	3668	msbuild.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 1796	2436	fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e.exe	87
PID 2436 wrote to memory of 1796	2436	fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e.exe	87
PID 2436 wrote to memory of 1796	2436	fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e.exe	87
PID 1796 wrote to memory of 3668	1796	bigloadtraffic.exe	89
PID 1796 wrote to memory of 3668	1796	bigloadtraffic.exe	89
PID 1796 wrote to memory of 3668	1796	bigloadtraffic.exe	89
PID 1796 wrote to memory of 3668	1796	bigloadtraffic.exe	89
PID 1796 wrote to memory of 3668	1796	bigloadtraffic.exe	89
PID 1796 wrote to memory of 3668	1796	bigloadtraffic.exe	89
PID 1796 wrote to memory of 3668	1796	bigloadtraffic.exe	89
PID 1796 wrote to memory of 3668	1796	bigloadtraffic.exe	89

C:\Users\Admin\AppData\Local\Temp\fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e.exe
"C:\Users\Admin\AppData\Local\Temp\fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Users\Admin\AppData\Roaming\linuxlinuxpython\bigloadtraffic.exe
  "C:\Users\Admin\AppData\Roaming\linuxlinuxpython\bigloadtraffic.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:1796
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3668

C:\Users\Admin\AppData\Roaming\linuxlinuxpython\bigloadtraffic.exe
C:\Users\Admin\AppData\Roaming\linuxlinuxpython\bigloadtraffic.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4764

C:\Users\Admin\AppData\Roaming\linuxlinuxpython\bigloadtraffic.exe
C:\Users\Admin\AppData\Roaming\linuxlinuxpython\bigloadtraffic.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1992

C:\Users\Admin\AppData\Roaming\linuxlinuxpython\bigloadtraffic.exe
C:\Users\Admin\AppData\Roaming\linuxlinuxpython\bigloadtraffic.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4284

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\bigloadtraffic.exe.log

Filesize
1KB

MD5
663b8d5469caa4489d463aa9bc18124f

SHA1
e57123a7d969115853ea631a3b33826335025d28

SHA256
7b4fa505452f0b8ac74bb31f5a03b13342836318018fb18d224ae2ff11b1a7e8

SHA512
45e373295125a629fcc0b19609608d969c9106514918bfac5d6b8e340e407434577b825741b8fa6a043c8f3f5c1a030ba8857da5f4e8ef15a551ce3c5fe03b55

Download Submit
C:\Users\Admin\AppData\Roaming\linuxlinuxpython\bigloadtraffic.exe

Filesize
3.0MB

MD5
7f580432eb19d02f431c76b06da0b824

SHA1
4c781782cf508ce8012f9987a413e720db9205e3

SHA256
fa2bbc8089706adc0ded30753f526ef1fcab3a1069ab99caba7e8e3ea26d7e6e

SHA512
f9f38b26e7c09c45c899ab1c395f684b3b4d6ea0a70b7d7a6e46a2b1edffd0da1ae4b001ba2a98abac234fdbad613d6b19f9d96260e6d9e2eb5dce2f49c99e34

Download Submit
C:\Users\Admin\AppData\Roaming\linuxlinuxpython\bigloadtraffic.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
memory/1796-29-0x0000000006C60000-0x0000000006CFC000-memory.dmp

Filesize
624KB

Download
memory/1796-23-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/1796-33-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/1796-27-0x0000000006310000-0x000000000635E000-memory.dmp

Filesize
312KB

Download
memory/1796-26-0x0000000005C70000-0x0000000005C82000-memory.dmp

Filesize
72KB

Download
memory/1796-25-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/2436-3-0x00000000057D0000-0x000000000582C000-memory.dmp

Filesize
368KB

Download
memory/2436-2-0x0000000002EC0000-0x0000000002ECE000-memory.dmp

Filesize
56KB

Download
memory/2436-24-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/2436-4-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/2436-7-0x0000000005E00000-0x0000000005E12000-memory.dmp

Filesize
72KB

Download
memory/2436-6-0x0000000005910000-0x00000000059A2000-memory.dmp

Filesize
584KB

Download
memory/2436-0-0x000000007503E000-0x000000007503F000-memory.dmp

Filesize
4KB

Download
memory/2436-1-0x00000000008E0000-0x0000000000BDE000-memory.dmp

Filesize
3.0MB

Download
memory/2436-5-0x0000000005EC0000-0x0000000006464000-memory.dmp

Filesize
5.6MB

Download
memory/3668-35-0x00000000062E0000-0x00000000062F0000-memory.dmp

Filesize
64KB

Download
memory/3668-34-0x00000000053E0000-0x00000000053F8000-memory.dmp

Filesize
96KB

Download
memory/3668-36-0x00000000065A0000-0x00000000065AA000-memory.dmp

Filesize
40KB

Download
memory/4764-31-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/4764-38-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download

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