orcus | 297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281

General

Target

297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281.exe
Size

3.0MB
MD5

af71685a6d32a679719b2efb9777d873
SHA1

a7360e648e95b9f627ef2fccd37db1b1c7599f9d
SHA256

297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281
SHA512

60b49f9952f5cacb924d13254bfe8c281320b4da52b3571978fac1f59894c30a89856e89afac4e5d2d7711825e62dcafda892af9c165c430143e23bda5d5e708
SSDEEP

49152:ZGX87p1EZKMnkmWg8LX5prviYDyKS5AypQxbRQAo9JnCmpKu/nRFfjI7L0qb:ZLHTPJg8z1mKnypSbRxo9JCm

Score

10^/10

orcus lunoclient rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

LunoClient

C2

31.44.184.52:64770

Mutex

sudo_xa9u5odc71f8ziw6ymhtgmgmvfhts0pn

Attributes

autostart_method
Disable
enable_keylogger
false
install_path
%appdata%\servercdn\ExLoader.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 main payload 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023b73-13.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/memory/3756-0-0x0000000000AB0000-0x0000000000DAE000-memory.dmp	orcus
behavioral2/files/0x000a000000023b73-13.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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281.exe

Executes dropped EXE 4 IoCs

pid	Process
3556	ExLoader.exe
1760	ExLoader.exe
4536	ExLoader.exe
1884	ExLoader.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3556 set thread context of 3204	3556	ExLoader.exe	89

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
3756	297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281.exe
3556	ExLoader.exe
3556	ExLoader.exe
3556	ExLoader.exe
3556	ExLoader.exe
3204	regasm.exe
3204	regasm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3756	297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281.exe
Token: SeDebugPrivilege	3556	ExLoader.exe
Token: SeDebugPrivilege	3204	regasm.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3756 wrote to memory of 3556	3756	297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281.exe	84
PID 3756 wrote to memory of 3556	3756	297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281.exe	84
PID 3756 wrote to memory of 3556	3756	297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281.exe	84
PID 3556 wrote to memory of 3352	3556	ExLoader.exe	88
PID 3556 wrote to memory of 3352	3556	ExLoader.exe	88
PID 3556 wrote to memory of 3352	3556	ExLoader.exe	88
PID 3556 wrote to memory of 3204	3556	ExLoader.exe	89
PID 3556 wrote to memory of 3204	3556	ExLoader.exe	89
PID 3556 wrote to memory of 3204	3556	ExLoader.exe	89
PID 3556 wrote to memory of 3204	3556	ExLoader.exe	89
PID 3556 wrote to memory of 3204	3556	ExLoader.exe	89
PID 3556 wrote to memory of 3204	3556	ExLoader.exe	89
PID 3556 wrote to memory of 3204	3556	ExLoader.exe	89
PID 3556 wrote to memory of 3204	3556	ExLoader.exe	89

C:\Users\Admin\AppData\Local\Temp\297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281.exe
"C:\Users\Admin\AppData\Local\Temp\297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3756
- C:\Users\Admin\AppData\Roaming\servercdn\ExLoader.exe
  "C:\Users\Admin\AppData\Roaming\servercdn\ExLoader.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3556
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
    3⤵
    PID:3352
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3204

C:\Users\Admin\AppData\Roaming\servercdn\ExLoader.exe
C:\Users\Admin\AppData\Roaming\servercdn\ExLoader.exe
1⤵
- Executes dropped EXE
PID:1760

C:\Users\Admin\AppData\Roaming\servercdn\ExLoader.exe
C:\Users\Admin\AppData\Roaming\servercdn\ExLoader.exe
1⤵
- Executes dropped EXE
PID:4536

C:\Users\Admin\AppData\Roaming\servercdn\ExLoader.exe
C:\Users\Admin\AppData\Roaming\servercdn\ExLoader.exe
1⤵
- Executes dropped EXE
PID:1884

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

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\ExLoader.exe.log

Filesize
1KB

MD5
663b8d5469caa4489d463aa9bc18124f

SHA1
e57123a7d969115853ea631a3b33826335025d28

SHA256
7b4fa505452f0b8ac74bb31f5a03b13342836318018fb18d224ae2ff11b1a7e8

SHA512
45e373295125a629fcc0b19609608d969c9106514918bfac5d6b8e340e407434577b825741b8fa6a043c8f3f5c1a030ba8857da5f4e8ef15a551ce3c5fe03b55

Download Submit
C:\Users\Admin\AppData\Roaming\servercdn\ExLoader.exe

Filesize
3.0MB

MD5
af71685a6d32a679719b2efb9777d873

SHA1
a7360e648e95b9f627ef2fccd37db1b1c7599f9d

SHA256
297715d7a1db600f1f38b5ddd1bebfda861a57635bab319a879a143da0e9e281

SHA512
60b49f9952f5cacb924d13254bfe8c281320b4da52b3571978fac1f59894c30a89856e89afac4e5d2d7711825e62dcafda892af9c165c430143e23bda5d5e708

Download Submit
C:\Users\Admin\AppData\Roaming\servercdn\ExLoader.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
memory/1760-39-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-30-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-31-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

Filesize
64KB

Download
memory/3204-37-0x0000000006C20000-0x0000000006C2A000-memory.dmp

Filesize
40KB

Download
memory/3204-36-0x0000000005FF0000-0x0000000006000000-memory.dmp

Filesize
64KB

Download
memory/3204-35-0x0000000005F60000-0x0000000005F78000-memory.dmp

Filesize
96KB

Download
memory/3556-34-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3556-29-0x0000000006240000-0x00000000062DC000-memory.dmp

Filesize
624KB

Download
memory/3556-24-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3556-25-0x00000000051C0000-0x00000000051D0000-memory.dmp

Filesize
64KB

Download
memory/3556-26-0x00000000052D0000-0x00000000052E2000-memory.dmp

Filesize
72KB

Download
memory/3556-27-0x0000000005FA0000-0x0000000005FEE000-memory.dmp

Filesize
312KB

Download
memory/3756-7-0x0000000005980000-0x0000000005992000-memory.dmp

Filesize
72KB

Download
memory/3756-23-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3756-6-0x0000000005B80000-0x0000000005C12000-memory.dmp

Filesize
584KB

Download
memory/3756-0-0x0000000000AB0000-0x0000000000DAE000-memory.dmp

Filesize
3.0MB

Download
memory/3756-5-0x0000000006090000-0x0000000006634000-memory.dmp

Filesize
5.6MB

Download
memory/3756-4-0x0000000005990000-0x00000000059EC000-memory.dmp

Filesize
368KB

Download
memory/3756-3-0x0000000005700000-0x000000000570E000-memory.dmp

Filesize
56KB

Download
memory/3756-2-0x0000000005720000-0x0000000005730000-memory.dmp

Filesize
64KB

Download
memory/3756-1-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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