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
behavioral1/files/0x0012000000015cc2-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
3020	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

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
3048	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2340	timeout.exe

Suspicious behavior: EnumeratesProcesses 33 IoCs

pid	Process
2068	penisware.exe
2068	penisware.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe
3020	penishost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2068	penisware.exe
Token: SeDebugPrivilege	3020	penishost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3020	penishost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 1284	2068	penisware.exe	28
PID 2068 wrote to memory of 1284	2068	penisware.exe	28
PID 2068 wrote to memory of 1284	2068	penisware.exe	28
PID 2068 wrote to memory of 2112	2068	penisware.exe	29
PID 2068 wrote to memory of 2112	2068	penisware.exe	29
PID 2068 wrote to memory of 2112	2068	penisware.exe	29
PID 2112 wrote to memory of 2340	2112	cmd.exe	32
PID 2112 wrote to memory of 2340	2112	cmd.exe	32
PID 2112 wrote to memory of 2340	2112	cmd.exe	32
PID 1284 wrote to memory of 3048	1284	cmd.exe	33
PID 1284 wrote to memory of 3048	1284	cmd.exe	33
PID 1284 wrote to memory of 3048	1284	cmd.exe	33
PID 2112 wrote to memory of 3020	2112	cmd.exe	34
PID 2112 wrote to memory of 3020	2112	cmd.exe	34
PID 2112 wrote to memory of 3020	2112	cmd.exe	34

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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2068
- 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:1284
- - 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:3048
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1C76.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2112
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2340
- - 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:3020

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

2

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Cab31FB.tmp

Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar4520.tmp

Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1C76.tmp.bat

Filesize
153B

MD5
b2f5731e8efa06ff31d0909dcbc9b548

SHA1
988169e421fe54bba725ccfd83ee2b651e666c1a

SHA256
73e44421c9cea5dafb64b180f0d2c9938d28f01e40e7d4132756ea924ed56018

SHA512
b1fb4ad5894809677b15976fcd1f33a6a713aaf47461db4255be097353a433973eca525f5849d2c3deb787b4b34a19e649bb228db7b1678e40718326f73bbf6e

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/2068-0-0x000007FEF57C3000-0x000007FEF57C4000-memory.dmp

Filesize
4KB

Download
memory/2068-1-0x0000000000A10000-0x0000000000A28000-memory.dmp

Filesize
96KB

Download
memory/2068-3-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

Filesize
9.9MB

Download
memory/2068-13-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

Filesize
9.9MB

Download
memory/2068-11-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

Filesize
9.9MB

Download
memory/3020-18-0x0000000000E20000-0x0000000000E38000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads