asyncrat | bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01/10/2024, 10:20

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General

Target

bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe
Size

63KB
MD5

b5da46ea47f9b458f4e11e08facc0b36
SHA1

945e066d5a6a08c19b3024857b376927ea7c323f
SHA256

bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c
SHA512

77e04b67cf417e45631af8b0eec7f3e1969f61608fd41ddce27a4d3e04de77058fd928927acfbe7000259b4334ff8a61e05cef72ab5c9d54dd4caceb3e5141ff
SSDEEP

1536:4hSjnRQ/kVJmV/KUf7v00PGbb2wy722GmdhpqKmY7:4hSjnRQ/kVC/KUjTGbb2h24az

Score

10^/10

asyncrat venom clients rat

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

87.227.227.78:4782

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes

delay
1
install
true
install_file
coinbase.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/0x0008000000019433-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2732	coinbase.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
2192	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
2216	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe
2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe
2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe
2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe
2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe
2732	coinbase.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe
Token: SeDebugPrivilege	2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe
Token: SeDebugPrivilege	2732	coinbase.exe
Token: SeDebugPrivilege	2732	coinbase.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 2148	2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe	30
PID 2088 wrote to memory of 2148	2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe	30
PID 2088 wrote to memory of 2148	2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe	30
PID 2088 wrote to memory of 1520	2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe	31
PID 2088 wrote to memory of 1520	2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe	31
PID 2088 wrote to memory of 1520	2088	bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe	31
PID 1520 wrote to memory of 2192	1520	cmd.exe	34
PID 1520 wrote to memory of 2192	1520	cmd.exe	34
PID 1520 wrote to memory of 2192	1520	cmd.exe	34
PID 2148 wrote to memory of 2216	2148	cmd.exe	35
PID 2148 wrote to memory of 2216	2148	cmd.exe	35
PID 2148 wrote to memory of 2216	2148	cmd.exe	35
PID 1520 wrote to memory of 2732	1520	cmd.exe	36
PID 1520 wrote to memory of 2732	1520	cmd.exe	36
PID 1520 wrote to memory of 2732	1520	cmd.exe	36

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\bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe
"C:\Users\Admin\AppData\Local\Temp\bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "coinbase" /tr '"C:\Users\Admin\AppData\Roaming\coinbase.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2148
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "coinbase" /tr '"C:\Users\Admin\AppData\Roaming\coinbase.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2216
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD143.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1520
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2192
- - C:\Users\Admin\AppData\Roaming\coinbase.exe
    "C:\Users\Admin\AppData\Roaming\coinbase.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD143.tmp.bat

Filesize
152B

MD5
c3ab47fe7d7a29a4e922061ccd6af8cb

SHA1
343d3fd68f9f38a712bf897310a0de8ce038b354

SHA256
62875ab2ae9da732e61b3d8c0e6e1008f96800587c904e7d771c37ac9c63d58c

SHA512
ff8089c5034fea3bd410e72b204ef6613f32c5c262cd1865d33cc108106c00a8bc579bee65bc9b3a80e2a3a1e798912c02b8307d816c67325891df8ec63d55cc

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

Filesize
63KB

MD5
b5da46ea47f9b458f4e11e08facc0b36

SHA1
945e066d5a6a08c19b3024857b376927ea7c323f

SHA256
bd5f79381890e67683071c76cd1bd8a13bfd52af104dd3c01824a39dbd85205c

SHA512
77e04b67cf417e45631af8b0eec7f3e1969f61608fd41ddce27a4d3e04de77058fd928927acfbe7000259b4334ff8a61e05cef72ab5c9d54dd4caceb3e5141ff

Download Submit
memory/2088-0-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

Filesize
4KB

Download
memory/2088-1-0x0000000001120000-0x0000000001136000-memory.dmp

Filesize
88KB

Download
memory/2088-2-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2088-3-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2088-12-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2732-17-0x0000000001360000-0x0000000001376000-memory.dmp

Filesize
88KB

Download