asyncrat | 41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36

General

Target
41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
Size 45KB
Sample260601-tbvgdsbs2k
SHA256 41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36
MD5 3dc6a7d3fef2f69ea81fc760e9b7409f
SHA1 96015f03fc9dd71f562c9943092145f9c8a74d90
SHA512 6eae13430f9c98fddeb06d96b2c8b10b05b5a07312ab7b7da1cff01302888dc048b07a498dc7c5e862feb75225007c2efd08ce75baffce93f133ad9ac5f85b4d
SSDEEP 768:Bupk9Tx5PWZZWUvfyRmo2qgnL5P02FUFdxYkk8PIXzjbNgX3iH1cs8PihqUnBDZd:Bupk9TxtOO2LLDmWBX3baXSVcsLh1djx
TLSH
T14B232B0037E9812BF2BE4F7469F26245867AF5732603D54A1CC441DB5A23FC69A43AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

phim-set.info:443
phim-set.info:80
phim-set.info:7797
phim-set.info:8707
phim-set.info:6620
www.phim-set.info:443
www.phim-set.info:80
www.phim-set.info:7797
www.phim-set.info:8707
www.phim-set.info:6620
ursnif.phim-set.info:443
ursnif.phim-set.info:80
ursnif.phim-set.info:7797
ursnif.phim-set.info:8707
ursnif.phim-set.info:6620
invasive.phim-set.info:443
invasive.phim-set.info:80
invasive.phim-set.info:7797
invasive.phim-set.info:8707
invasive.phim-set.info:6620

Mutex

hVA2IFPwJsVQ

Attributes

delay
0
install
true
install_file
9fq3.exe
install_folder
%AppData%

aes.plain

Signatures

Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x001c00000002b35b-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2296	9fq3.exe
4532	9fq3.exe

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	9fq3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9fq3.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2568	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1092	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
Token: SeDebugPrivilege	2296	9fq3.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5192 wrote to memory of 2672	5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe	80
PID 5192 wrote to memory of 824	5192	41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe	82
PID 2672 wrote to memory of 1092	2672	cmd.exe	84
PID 824 wrote to memory of 2568	824	cmd.exe	85
PID 824 wrote to memory of 4532	824	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe
"C:\Users\Admin\AppData\Local\Temp\41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5192
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "9fq3" /tr '"C:\Users\Admin\AppData\Roaming\9fq3.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "9fq3" /tr '"C:\Users\Admin\AppData\Roaming\9fq3.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1092
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4F73.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:824
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2568
- - C:\Users\Admin\AppData\Roaming\9fq3.exe
    "C:\Users\Admin\AppData\Roaming\9fq3.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4532

C:\Users\Admin\AppData\Roaming\9fq3.exe
"C:\Users\Admin\AppData\Roaming\9fq3.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2296

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmp4F73.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp4F73.tmp.bat
Size 148B
SHA256 3fb8d8c3c1611830d791d4b2fe4f20deaf09237b96bd207a44492c6e25e146b0
MD5 f8009f47694e961f58e8a82ca8b6e982
SHA1 4860f92c2f8df07effad3cf8de7a1d1357a08773
SHA512 6272bfa5abec911dd81e7f777f45c93ddcd03b76ee44ecfedbc8eecb6b309f7f31f22e161bbb31c451c803032631c2d3fe394b38e58c1a2ab256fb2afbc85328
TLSH
T1EEC02B8356C5EA6E2805382327FAD4CD91B26C5D3F80FB00C308445D12C04D8F0DE341
MD5 SHA1 SHA512 TLSH

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9fq3.exe

Path C:\Users\Admin\AppData\Roaming\9fq3.exe
Size 45KB
SHA256 41a896d08815b3080784f8735f0d3f61139a046de1c1c70d825d9b780bc12f36
MD5 3dc6a7d3fef2f69ea81fc760e9b7409f
SHA1 96015f03fc9dd71f562c9943092145f9c8a74d90
SHA512 6eae13430f9c98fddeb06d96b2c8b10b05b5a07312ab7b7da1cff01302888dc048b07a498dc7c5e862feb75225007c2efd08ce75baffce93f133ad9ac5f85b4d
SSDEEP 768:Bupk9Tx5PWZZWUvfyRmo2qgnL5P02FUFdxYkk8PIXzjbNgX3iH1cs8PihqUnBDZd:Bupk9TxtOO2LLDmWBX3baXSVcsLh1djx
TLSH
T14B232B0037E9812BF2BE4F7469F26245867AF5732603D54A1CC441DB5A23FC69A43AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5192-0-0x0000000000510000-0x0000000000522000-memory.dmp

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memory/5192-1-0x0000000004F00000-0x0000000004F10000-memory.dmp

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memory/5192-2-0x0000000004FB0000-0x000000000504C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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