asyncrat | a81247dc7f17c060fd6b4a9b4610f43a091c03ad29d2fa1ca33123f24b94a9f6

General

Target

CeleryPaid.exe
Size

84KB
MD5

d8ddfe689db5aa55038f2a6901bc4129
SHA1

1aa8014aa025d9c664607d8dc382ff519e8f3597
SHA256

a81247dc7f17c060fd6b4a9b4610f43a091c03ad29d2fa1ca33123f24b94a9f6
SHA512

c5e949107c6dd6715f8a53dbdcadd655f122d1e707a091a4eed949bae9a0d14d1fbb4ae29905ab45315a5bd707dc1225fafccb3b0d5cef98859b38ffcfd306bc
SSDEEP

1536:7uUTVTwA4M2a6jK8rICGOMbCFNiLQPJPUGdRPkZb48nZYc6fFyo+O13y0FT4DRuT:7uURTwA4M2ZjK8rICzMbCF/ZUGMbpmco

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

193.161.193.99:6606

193.161.193.99:7707

193.161.193.99:8808

193.161.193.99:8000

193.161.193.99:1194

193.161.193.99:39886

193.161.193.99:41111

Mutex

4t5F44SITrns

Attributes

delay
3
install
true
install_file
CeleryPaid.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
behavioral1/files/0x000900000002344e-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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	CeleryPaid.exe

Executes dropped EXE 1 IoCs

pid	Process
4452	CeleryPaid.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	CeleryPaid.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	CeleryPaid.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1992	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
3916	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe
4632	CeleryPaid.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4632	CeleryPaid.exe
Token: SeDebugPrivilege	4452	CeleryPaid.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4632 wrote to memory of 4888	4632	CeleryPaid.exe	87
PID 4632 wrote to memory of 4888	4632	CeleryPaid.exe	87
PID 4632 wrote to memory of 4888	4632	CeleryPaid.exe	87
PID 4632 wrote to memory of 2216	4632	CeleryPaid.exe	89
PID 4632 wrote to memory of 2216	4632	CeleryPaid.exe	89
PID 4632 wrote to memory of 2216	4632	CeleryPaid.exe	89
PID 4888 wrote to memory of 3916	4888	cmd.exe	91
PID 4888 wrote to memory of 3916	4888	cmd.exe	91
PID 4888 wrote to memory of 3916	4888	cmd.exe	91
PID 2216 wrote to memory of 1992	2216	cmd.exe	92
PID 2216 wrote to memory of 1992	2216	cmd.exe	92
PID 2216 wrote to memory of 1992	2216	cmd.exe	92
PID 2216 wrote to memory of 4452	2216	cmd.exe	97
PID 2216 wrote to memory of 4452	2216	cmd.exe	97
PID 2216 wrote to memory of 4452	2216	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\CeleryPaid.exe
"C:\Users\Admin\AppData\Local\Temp\CeleryPaid.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "CeleryPaid" /tr '"C:\Users\Admin\AppData\Roaming\CeleryPaid.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4888
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "CeleryPaid" /tr '"C:\Users\Admin\AppData\Roaming\CeleryPaid.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3916
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8CA0.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2216
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1992
- - C:\Users\Admin\AppData\Roaming\CeleryPaid.exe
    "C:\Users\Admin\AppData\Roaming\CeleryPaid.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4452

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\Microsoft\CLR_v4.0_32\UsageLogs\CeleryPaid.exe.log

Filesize
522B

MD5
acc9090417037dfa2a55b46ed86e32b8

SHA1
53fa6fb25fb3e88c24d2027aca6ae492b2800a4d

SHA256
2412679218bb0a7d05ceee32869bbb223619bde9966c4c460a68304a3367724b

SHA512
d51f7085ec147c708f446b9fb6923cd2fb64596d354ed929e125b30ace57c8cb3217589447a36960e5d3aea87a4e48aaa82c7509eced6d6c2cecd71fcfe3697b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8CA0.tmp.bat

Filesize
154B

MD5
5a1088d6a562765c2e8ebeeac55c5dfd

SHA1
36db241e2377de4a3d56162729b896ebe2d066be

SHA256
066b03e141710d93494c2182f26ced875a3998f8aa05f8d288d0adb8f714d215

SHA512
1704d65d995ba003568066b49b8acf39e5eaa1d0e275473f01285a321602c3c26ff6e0a257ae2932b8a0c1aa28201cb5782f8b737b92e182701ed57e574c559c

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

Filesize
84KB

MD5
d8ddfe689db5aa55038f2a6901bc4129

SHA1
1aa8014aa025d9c664607d8dc382ff519e8f3597

SHA256
a81247dc7f17c060fd6b4a9b4610f43a091c03ad29d2fa1ca33123f24b94a9f6

SHA512
c5e949107c6dd6715f8a53dbdcadd655f122d1e707a091a4eed949bae9a0d14d1fbb4ae29905ab45315a5bd707dc1225fafccb3b0d5cef98859b38ffcfd306bc

Download Submit
memory/4452-14-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/4452-17-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/4632-0-0x0000000074CDE000-0x0000000074CDF000-memory.dmp

Filesize
4KB

Download
memory/4632-1-0x0000000000FA0000-0x0000000000FBA000-memory.dmp

Filesize
104KB

Download
memory/4632-2-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/4632-3-0x0000000005970000-0x0000000005A0C000-memory.dmp

Filesize
624KB

Download
memory/4632-8-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads