orcus | 9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e

General

Target

9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe
Size

2.0MB
MD5

cfbef968f6849584b09d80e9400831fb
SHA1

55dcd9883812008506b97913b357086bf83b35f2
SHA256

9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e
SHA512

f36b932f985a88101c173b33c68653c106dc34deb79653bac29cea8d48afb78570f1627a7259621a5dbaea5a69b4259d18a74f6564aaf5d272e16a9911359836
SSDEEP

12288:55STYf+qnR7Fkxh7dG1lFlWcYT70pxnnaaoawhmg6vgWrOrZNrI0AilFEvxHvBMI:fhg4MROxnFc645rZlI0AilFEvxHi70

Score

10^/10

orcus rat spyware stealer

Malware Config

Extracted

Family

orcus

C2

185.154.14.217:10134

Mutex

8f9ad032680b48e4921e3dead6b0b2ce

Attributes

autostart_method
TaskScheduler
enable_keylogger
true
install_path
%appdata%\Java\javaUpdate.exe
reconnect_delay
10000
registry_keyname
JavaUpate
taskscheduler_taskname
JavaUpate
watchdog_path
AppData\OrcusWatchdog.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/0x00080000000233d6-55.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233d6-55.dat	orcus
behavioral2/memory/1572-66-0x0000000000BA0000-0x0000000000C8C000-memory.dmp	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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe

Executes dropped EXE 4 IoCs

pid	Process
3616	WindowsInput.exe
4112	WindowsInput.exe
1572	javaUpdate.exe
4084	javaUpdate.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WindowsInput.exe	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe
File created	C:\Windows\SysWOW64\WindowsInput.InstallState	WindowsInput.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe
File created	C:\Windows\assembly\Desktop.ini	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1572	javaUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1572	javaUpdate.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 1896	2176	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe	84
PID 2176 wrote to memory of 1896	2176	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe	84
PID 1896 wrote to memory of 4544	1896	csc.exe	87
PID 1896 wrote to memory of 4544	1896	csc.exe	87
PID 2176 wrote to memory of 3616	2176	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe	88
PID 2176 wrote to memory of 3616	2176	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe	88
PID 2176 wrote to memory of 1572	2176	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe	92
PID 2176 wrote to memory of 1572	2176	9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe	92

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe
"C:\Users\Admin\AppData\Local\Temp\9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
  "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\fwzlat4s.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1896
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
    C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES7550.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC754F.tmp"
    3⤵
    PID:4544
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:3616
- C:\Users\Admin\AppData\Roaming\Java\javaUpdate.exe
  "C:\Users\Admin\AppData\Roaming\Java\javaUpdate.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1572

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:4112

C:\Users\Admin\AppData\Roaming\Java\javaUpdate.exe
C:\Users\Admin\AppData\Roaming\Java\javaUpdate.exe
1⤵
- Executes dropped EXE
PID:4084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

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\Temp\RES7550.tmp

Filesize
1KB

MD5
555f0a6ee08a7913d32046d86eb706b5

SHA1
01b3264d5fcd1284d0e235e1bfc70ec7875e6760

SHA256
06744c56cf58f52c8ff6981762186454649a3385a0546ea64d9981568e2de736

SHA512
8e9d5cd9e76f37c8c892ab6126378dfe489f89a14d1237452f4979a1bc1fed27693826ccaa95ddc28ae50904ac7f5e5ae294536689f8b6ecaf40cf67640d0a1d

Download Submit
C:\Users\Admin\AppData\Local\Temp\fwzlat4s.dll

Filesize
76KB

MD5
30f750ec6dfa7bb743ad5cec781c431f

SHA1
f1b12e0cc6598f2692fde4e1eb31fce68e869cc9

SHA256
899e2c7513d3ffaec71e5f5f4fa6026112f9bba0e8702c2a7f084f09da557149

SHA512
a1cf7ffcad2cc707c9530c80a48f69d38443f708e37a2d65c64986cad072fe3c0266c13b0c5ca1268fdcb6e280430fa79a1d9607714543f3c4517753ddb8444d

Download Submit
C:\Users\Admin\AppData\Roaming\Java\javaUpdate.exe

Filesize
2.0MB

MD5
cfbef968f6849584b09d80e9400831fb

SHA1
55dcd9883812008506b97913b357086bf83b35f2

SHA256
9ebfa684485369043b5c5c06972a96e592c2b9a4a276361ca0557da90a15f60e

SHA512
f36b932f985a88101c173b33c68653c106dc34deb79653bac29cea8d48afb78570f1627a7259621a5dbaea5a69b4259d18a74f6564aaf5d272e16a9911359836

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe

Filesize
21KB

MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\CSC754F.tmp

Filesize
676B

MD5
7865988d2c38c5daaaf0a68a2fddf681

SHA1
c7c4e8444fc9fa1478c3247c90e459bb87e257ef

SHA256
5037cb2ee43ad1374dc4787f443b67db84f08b36aee370e44b30d470caddadb5

SHA512
25e194655d94c65b71564134c5ac3c38b2d8ee35196e11d55c4a03f14240dc56b2f5b3cbaedf73db54af1bca995ff26c7080666e4b7af227a6a5398479618d0c

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\fwzlat4s.0.cs

Filesize
208KB

MD5
2ee7be672205381b388409acecf5bccc

SHA1
4e930cc3443efebf015fbae503b087d22f7e7d35

SHA256
0550fe3ac4772119c887db19b113f9609e37a8dfc00b21833cbf95888413da55

SHA512
46b1d5b6e1c15eda362ae0cbd24a59951080b4f023fc01ea63de9fe68bbc601eda6a9df1f24ee908304683a4905749cfa8f8e5cc2605a6f6dd8b01a436866324

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\fwzlat4s.cmdline

Filesize
349B

MD5
3f467596d7ac9804894fb92bf683841d

SHA1
075c6022c62f96bb0ed357ed059306c37d0c3184

SHA256
5d561f222c6ccb55cf6057495c8d19f371afc2d0299e070100cdfa0993e22d17

SHA512
10fabe36e2978a319a260e72510b2ce733156e8a96dc5072fa3c6bf3cf5442d71158a1f05693ad4bb4814b6a936e55c8d451dc25bdb5ceaa9a05420d040cd162

Download Submit
memory/1572-68-0x000000001B810000-0x000000001B85E000-memory.dmp

Filesize
312KB

Download
memory/1572-66-0x0000000000BA0000-0x0000000000C8C000-memory.dmp

Filesize
944KB

Download
memory/1572-67-0x0000000002EA0000-0x0000000002EB2000-memory.dmp

Filesize
72KB

Download
memory/1572-70-0x000000001BDF0000-0x000000001BE08000-memory.dmp

Filesize
96KB

Download
memory/1572-71-0x000000001BF10000-0x000000001BF20000-memory.dmp

Filesize
64KB

Download
memory/1572-72-0x000000001C110000-0x000000001C2D2000-memory.dmp

Filesize
1.8MB

Download
memory/1896-16-0x00007FF9FFCC0000-0x00007FFA00661000-memory.dmp

Filesize
9.6MB

Download
memory/1896-21-0x00007FF9FFCC0000-0x00007FFA00661000-memory.dmp

Filesize
9.6MB

Download
memory/2176-26-0x000000001B6D0000-0x000000001B6D8000-memory.dmp

Filesize
32KB

Download
memory/2176-6-0x000000001B9F0000-0x000000001B9FE000-memory.dmp

Filesize
56KB

Download
memory/2176-0-0x00007FF9FFF75000-0x00007FF9FFF76000-memory.dmp

Filesize
4KB

Download
memory/2176-25-0x000000001B6F0000-0x000000001B702000-memory.dmp

Filesize
72KB

Download
memory/2176-1-0x00007FF9FFCC0000-0x00007FFA00661000-memory.dmp

Filesize
9.6MB

Download
memory/2176-2-0x000000001B800000-0x000000001B85C000-memory.dmp

Filesize
368KB

Download
memory/2176-3-0x00007FF9FFCC0000-0x00007FFA00661000-memory.dmp

Filesize
9.6MB

Download
memory/2176-27-0x000000001CE70000-0x000000001CE90000-memory.dmp

Filesize
128KB

Download
memory/2176-7-0x000000001BED0000-0x000000001C39E000-memory.dmp

Filesize
4.8MB

Download
memory/2176-23-0x000000001CB00000-0x000000001CB16000-memory.dmp

Filesize
88KB

Download
memory/2176-65-0x00007FF9FFCC0000-0x00007FFA00661000-memory.dmp

Filesize
9.6MB

Download
memory/2176-8-0x000000001C440000-0x000000001C4DC000-memory.dmp

Filesize
624KB

Download
memory/3616-44-0x0000000002C80000-0x0000000002CBC000-memory.dmp

Filesize
240KB

Download
memory/3616-43-0x0000000002C10000-0x0000000002C22000-memory.dmp

Filesize
72KB

Download
memory/3616-42-0x00007FF9FC943000-0x00007FF9FC945000-memory.dmp

Filesize
8KB

Download
memory/3616-41-0x0000000000B70000-0x0000000000B7C000-memory.dmp

Filesize
48KB

Download
memory/4112-49-0x000000001A620000-0x000000001A72A000-memory.dmp

Filesize
1.0MB

Download

Analysis

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