asyncrat | bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bd | Triage

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
04/01/2025, 12:20 UTC

Sharing

Report Analysis Logs

General

Target

bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe
Size

74KB
MD5

77871f58327c843333d20cbde8f414e0
SHA1

1ae10e9b9d9305cfd939cd2c71afcb7aadc46536
SHA256

bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bd
SHA512

aaca63540270d02242743bec639bb6f2add9cd1e664648bb69a2745293bf89df6a49f0241649d568b00f5efb3cacdaec38beab788d12e21d2004b3a906f59df8
SSDEEP

1536:8UaAcx2l/Cx2PMVie9VdQuDI6H1bf/HSpQzcMGVclN:8UDcx2Bq2PMVie9VdQsH1bf6pQtcY

Score

10^/10

asyncrat venomrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

127.0.0.1:4449

18.231.223.127:4449

Mutex

ytlgxccuen

Attributes

delay
1
install
true
install_file
expl0rer.exe
install_folder
%AppData%

aes.plain

1
8yjcFOiQaDEdtI13s9Uww9b3mN1fcgrx

Signatures

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

VenomRAT 3 IoCs

Detects VenomRAT.

resource	yara_rule
behavioral1/memory/2060-1-0x0000000000090000-0x00000000000A8000-memory.dmp	VenomRAT
behavioral1/files/0x0009000000016d3f-16.dat	VenomRAT
behavioral1/memory/2900-18-0x0000000000D40000-0x0000000000D58000-memory.dmp	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000016d3f-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2900	expl0rer.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

pid	Process
2360	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

pid	Process
2964	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe
2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe
2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe
2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe
2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe
2900	expl0rer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe
Token: SeDebugPrivilege	2900	expl0rer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2900	expl0rer.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 1756	2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe	30
PID 2060 wrote to memory of 1756	2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe	30
PID 2060 wrote to memory of 1756	2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe	30
PID 2060 wrote to memory of 2632	2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe	31
PID 2060 wrote to memory of 2632	2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe	31
PID 2060 wrote to memory of 2632	2060	bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe	31
PID 1756 wrote to memory of 2964	1756	cmd.exe	34
PID 1756 wrote to memory of 2964	1756	cmd.exe	34
PID 1756 wrote to memory of 2964	1756	cmd.exe	34
PID 2632 wrote to memory of 2360	2632	cmd.exe	35
PID 2632 wrote to memory of 2360	2632	cmd.exe	35
PID 2632 wrote to memory of 2360	2632	cmd.exe	35
PID 2632 wrote to memory of 2900	2632	cmd.exe	37
PID 2632 wrote to memory of 2900	2632	cmd.exe	37
PID 2632 wrote to memory of 2900	2632	cmd.exe	37

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\bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe
"C:\Users\Admin\AppData\Local\Temp\bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bdN.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2060
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "expl0rer" /tr '"C:\Users\Admin\AppData\Roaming\expl0rer.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1756
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "expl0rer" /tr '"C:\Users\Admin\AppData\Roaming\expl0rer.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2964
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD9EB.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2632
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2360
- - C:\Users\Admin\AppData\Roaming\expl0rer.exe
    "C:\Users\Admin\AppData\Roaming\expl0rer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2900

Network

No results found

18.231.223.127:4449

expl0rer.exe

152 B
3
18.231.223.127:4449

expl0rer.exe

152 B
3
18.231.223.127:4449

expl0rer.exe

152 B
3
18.231.223.127:4449

expl0rer.exe

152 B
3
127.0.0.1:4449

expl0rer.exe
18.231.223.127:4449

expl0rer.exe

152 B
3

No results found

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Scheduled Task

Persistence

Scheduled Task/Job

Scheduled Task

Privilege Escalation

Scheduled Task/Job

Scheduled Task

Defense Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD9EB.tmp.bat

Filesize
152B

MD5
e5647cbff0419628e78c02a00601b5d1

SHA1
d29d59899649c888e4253bfd69bf8f26f37e98f4

SHA256
2e1bf283e844f2b0ba394fd2d7b313450ff6c143dbb9b3887411fa5577c7055b

SHA512
417a1c80b882358662eaafe826087b91374e547ad1370983f7bd77bac769a51745ccef5a30399a513f0465759161f9c43f8026947cb3a842db5118c6c8b6438c

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\expl0rer.exe

Filesize
74KB

MD5
77871f58327c843333d20cbde8f414e0

SHA1
1ae10e9b9d9305cfd939cd2c71afcb7aadc46536

SHA256
bd337aa3192a729d7d17725c0b62f215d27e4fbbfe549cd0331471f810faa0bd

SHA512
aaca63540270d02242743bec639bb6f2add9cd1e664648bb69a2745293bf89df6a49f0241649d568b00f5efb3cacdaec38beab788d12e21d2004b3a906f59df8

Download Submit
memory/2060-0-0x000007FEF5DD3000-0x000007FEF5DD4000-memory.dmp

Filesize
4KB

Download
memory/2060-1-0x0000000000090000-0x00000000000A8000-memory.dmp

Filesize
96KB

Download
memory/2060-3-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

Filesize
9.9MB

Download
memory/2060-4-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

Filesize
9.9MB

Download
memory/2060-14-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

Filesize
9.9MB

Download
memory/2900-18-0x0000000000D40000-0x0000000000D58000-memory.dmp

Filesize
96KB

Download