asyncrat | 6ea3a5ebedbe3a2c550261a4a2949c4304584fd8cef0ba6189c57ccd6cad1e8c

General

Target

penisware.exe
Size

74KB
MD5

315cfea4df6af50734fc2405ece1e4fb
SHA1

cc0ff1cdbb9782d9b89928f5e4cd974af3721b0a
SHA256

6ea3a5ebedbe3a2c550261a4a2949c4304584fd8cef0ba6189c57ccd6cad1e8c
SHA512

ce70a8905f6c1bbf9045d7dd1d799bb3dfbf2e26282f58adc06790d7887b979e0f52c262913b7ded3b953fd2cffd986c57f5b62ad2bae5aac71e45d8b58a3e23
SSDEEP

1536:ZUv8cxBPowCH6PMV+wPgIdH1bI/PVducQzc2LVclN:ZUEcxBPXI6PMV+EjH1bImcQPBY

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

147.185.221.19:25944

Mutex

jrukmdndzaa

Attributes

delay
1
install
true
install_file
penishost.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/0x000b000000023356-10.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	penisware.exe

Executes dropped EXE 1 IoCs

pid	Process
1228	penishost.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2464	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2816	timeout.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
2920	penisware.exe
1228	penishost.exe
1228	penishost.exe
1228	penishost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2920	penisware.exe
Token: SeDebugPrivilege	1228	penishost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1228	penishost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2920 wrote to memory of 1028	2920	penisware.exe	84
PID 2920 wrote to memory of 1028	2920	penisware.exe	84
PID 2920 wrote to memory of 3036	2920	penisware.exe	86
PID 2920 wrote to memory of 3036	2920	penisware.exe	86
PID 1028 wrote to memory of 2464	1028	cmd.exe	88
PID 1028 wrote to memory of 2464	1028	cmd.exe	88
PID 3036 wrote to memory of 2816	3036	cmd.exe	89
PID 3036 wrote to memory of 2816	3036	cmd.exe	89
PID 3036 wrote to memory of 1228	3036	cmd.exe	91
PID 3036 wrote to memory of 1228	3036	cmd.exe	91

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\penisware.exe
"C:\Users\Admin\AppData\Local\Temp\penisware.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2920
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "penishost" /tr '"C:\Users\Admin\AppData\Roaming\penishost.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1028
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "penishost" /tr '"C:\Users\Admin\AppData\Roaming\penishost.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2464
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp48A2.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3036
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2816
- - C:\Users\Admin\AppData\Roaming\penishost.exe
    "C:\Users\Admin\AppData\Roaming\penishost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp48A2.tmp.bat

Filesize
153B

MD5
5198b29a61c14554c2ace2c7dbfa2925

SHA1
98b0419d78dd60f8d1cb533359b7c8ba7d6b64f0

SHA256
2c08f3ffe4af3b88cfaa229c747a39c90efa2b013f6ea1ab6717afc2d2cb21f5

SHA512
c7926964fb059ed86b54c8b1ba545f802c0d7522b389054d3635d8a3bf70b1754d83a907a0797e7ef9420b224b13b0359abd7f847f8f39af615b489682b6984c

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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

Filesize
74KB

MD5
315cfea4df6af50734fc2405ece1e4fb

SHA1
cc0ff1cdbb9782d9b89928f5e4cd974af3721b0a

SHA256
6ea3a5ebedbe3a2c550261a4a2949c4304584fd8cef0ba6189c57ccd6cad1e8c

SHA512
ce70a8905f6c1bbf9045d7dd1d799bb3dfbf2e26282f58adc06790d7887b979e0f52c262913b7ded3b953fd2cffd986c57f5b62ad2bae5aac71e45d8b58a3e23

Download Submit
memory/1228-14-0x000000001C660000-0x000000001C6D6000-memory.dmp

Filesize
472KB

Download
memory/1228-15-0x0000000002B00000-0x0000000002B10000-memory.dmp

Filesize
64KB

Download
memory/1228-16-0x000000001B630000-0x000000001B64E000-memory.dmp

Filesize
120KB

Download
memory/2920-0-0x00007FFE5BD23000-0x00007FFE5BD25000-memory.dmp

Filesize
8KB

Download
memory/2920-1-0x0000000000DF0000-0x0000000000E08000-memory.dmp

Filesize
96KB

Download
memory/2920-3-0x00007FFE5BD20000-0x00007FFE5C7E1000-memory.dmp

Filesize
10.8MB

Download
memory/2920-8-0x00007FFE5BD20000-0x00007FFE5C7E1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads