asyncrat | 83c854b5ab60971d9d00fe88f9ec5238087b27ac2a7606e34d249778d430b445

General

Target
ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
Size 63KB
Sample240802-cjpgnsthlc
SHA256 ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a
MD5 5f00c912f2ac12df8525a30afb8f776e
SHA1 516af350678a65e9e10901b8c990ef4601ae0844
SHA512 5e9e96ed14d4c1fff020d9d1d00f137cbf1121cd5c3c58a054002d7d1f29a417b6f2f71d8f534c7207ea6bd87a3b57d7afea76390b90a1c8badf482dbba710d5
SSDEEP 1536:FhMpLbRQkB4+ENds+jFBncsSRoAGbbzwHvGHtpqKmY7:FhMpLbRQkB4tds+jFBl2JGbbzt2z
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.2

Botnet

Default

C2

stores-less.gl.at.ply.gg:45080

Mutex

AtomRatMutex_penka

Attributes

delay
1
install
true
install_file
svchost.exe
install_folder
%AppData%

aes.plain

Signatures

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/0x000e0000000231ed-10.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-1-5-21-2721909339-1374969515-2476821579-1000\Control Panel\International\Geo\Nation	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe

Executes dropped EXE 1 IoCs

pid	Process
4932	svchost.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4620	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
3708	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
Token: SeDebugPrivilege	3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
Token: SeDebugPrivilege	4932	svchost.exe
Token: SeDebugPrivilege	4932	svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3320 wrote to memory of 4580	3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe	86
PID 3320 wrote to memory of 4580	3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe	86
PID 3320 wrote to memory of 5052	3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe	88
PID 3320 wrote to memory of 5052	3320	ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe	88
PID 5052 wrote to memory of 4620	5052	cmd.exe	90
PID 5052 wrote to memory of 4620	5052	cmd.exe	90
PID 4580 wrote to memory of 3708	4580	cmd.exe	91
PID 4580 wrote to memory of 3708	4580	cmd.exe	91
PID 5052 wrote to memory of 4932	5052	cmd.exe	92
PID 5052 wrote to memory of 4932	5052	cmd.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\ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe
"C:\Users\Admin\AppData\Local\Temp\ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3320
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4580
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3708
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA345.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5052
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4620
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4932

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpA345.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpA345.tmp.bat
Size 151B
SHA256 5738a4710e6083fc4d792976ef65e18e5d7519ea7e9e7e66a3efdb87e00ce96f
MD5 7d5a4b7fb4956720aa35b6891f4b8062
SHA1 35968800233eeb04bcabe8aba05be8f08fd4e540
SHA512 68aff4ede6de113e9b28e1b3c889c252ab741a565695dbdfc4260456c1d579fdfef43ca51b3360909e6cda690921b66e4df9a50f79f82071136dcc605ae72a98
MD5 SHA1 SHA512

Submit Download

svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 63KB
SHA256 ffe2d2e6b930f0b8f752d2a478d77cfbf9467006d294474fe33970a8c529b75a
MD5 5f00c912f2ac12df8525a30afb8f776e
SHA1 516af350678a65e9e10901b8c990ef4601ae0844
SHA512 5e9e96ed14d4c1fff020d9d1d00f137cbf1121cd5c3c58a054002d7d1f29a417b6f2f71d8f534c7207ea6bd87a3b57d7afea76390b90a1c8badf482dbba710d5
SSDEEP 1536:FhMpLbRQkB4+ENds+jFBncsSRoAGbbzwHvGHtpqKmY7:FhMpLbRQkB4tds+jFBl2JGbbzt2z
MD5 SHA1 SHA512 SSDEEP

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads