asyncrat | 21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca

General

Target

21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
Size

61KB
MD5

2499d05e60a2aae9123f0f37d12ab1dd
SHA1

b24fe29c7cc5319fe508ea539567e4832c6890cf
SHA256

21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca
SHA512

f5fbb29e6e99fd73250737dacc9b45409da600459d6a7c7ef6a02c508f31702e522f9eb5ca9d29ac7d1b59a024dbf66e4a869ea18e75e14c96523011fc1d0ca1
SSDEEP

1536:8F8JsI94/CcIAVBala3b7PSSD3pKFNEx+:m8JsZCcIAzala3b7NDQFNEE

Score

10^/10

asyncrat discovery rat

Malware Config

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000a000000023c73-11.dat	family_asyncrat

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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe

Executes dropped EXE 1 IoCs

pid	Process
2008	girlshelpgirls2.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 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	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.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	girlshelpgirls2.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
408	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
324	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
Token: SeDebugPrivilege	2008	girlshelpgirls2.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1140 wrote to memory of 2200	1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe	83
PID 1140 wrote to memory of 2200	1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe	83
PID 1140 wrote to memory of 2200	1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe	83
PID 1140 wrote to memory of 4516	1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe	85
PID 1140 wrote to memory of 4516	1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe	85
PID 1140 wrote to memory of 4516	1140	21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe	85
PID 4516 wrote to memory of 408	4516	cmd.exe	87
PID 4516 wrote to memory of 408	4516	cmd.exe	87
PID 4516 wrote to memory of 408	4516	cmd.exe	87
PID 2200 wrote to memory of 324	2200	cmd.exe	88
PID 2200 wrote to memory of 324	2200	cmd.exe	88
PID 2200 wrote to memory of 324	2200	cmd.exe	88
PID 4516 wrote to memory of 2008	4516	cmd.exe	89
PID 4516 wrote to memory of 2008	4516	cmd.exe	89
PID 4516 wrote to memory of 2008	4516	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe
"C:\Users\Admin\AppData\Local\Temp\21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1140
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "girlshelpgirls2" /tr '"C:\Users\Admin\AppData\Roaming\girlshelpgirls2.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2200
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "girlshelpgirls2" /tr '"C:\Users\Admin\AppData\Roaming\girlshelpgirls2.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:324
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB9DA.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4516
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:408
- - C:\Users\Admin\AppData\Roaming\girlshelpgirls2.exe
    "C:\Users\Admin\AppData\Roaming\girlshelpgirls2.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2008

Network

MITRE ATT&CK Enterprise v15

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

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB9DA.tmp.bat

Filesize
159B

MD5
ff7147f5814369a3825ce2c7b98976d2

SHA1
9db83e38f9546327ed8ef8003880381e8b287106

SHA256
b44210342f96d1048acfa09f7a82d265585e527b5aecc3bea3d8d1a3559ebd6e

SHA512
c4dd1584b0b802dceb177bfbf9ee6503ef8db300abc624b6349a1ffbe99db2679e83a62fba6f1feb8cc6110d34812e2d85d6737ecbf87f1000f17c367a3e44cd

Download Submit
C:\Users\Admin\AppData\Roaming\girlshelpgirls2.exe

Filesize
61KB

MD5
2499d05e60a2aae9123f0f37d12ab1dd

SHA1
b24fe29c7cc5319fe508ea539567e4832c6890cf

SHA256
21b61d55d4619a2ca0a1893a1a18154260eb81c76d421e3a60e5596ef8c2ccca

SHA512
f5fbb29e6e99fd73250737dacc9b45409da600459d6a7c7ef6a02c508f31702e522f9eb5ca9d29ac7d1b59a024dbf66e4a869ea18e75e14c96523011fc1d0ca1

Download Submit
memory/1140-0-0x000000007449E000-0x000000007449F000-memory.dmp

Filesize
4KB

Download
memory/1140-1-0x00000000008C0000-0x00000000008D6000-memory.dmp

Filesize
88KB

Download
memory/1140-2-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/1140-3-0x0000000005350000-0x00000000053EC000-memory.dmp

Filesize
624KB

Download
memory/1140-9-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/2008-13-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/2008-14-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads