asyncrat | 93e296579910efa85a3b68bb48ce390d542144e5544aaf6b6da1070e8bc4be75

Analysis

max time kernel
150s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-11-2024 09:08

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General

Target

DsAhotm_LetThereBeCarnage.exe
Size

251KB
MD5

9e732c5246739e8432d73ade12d6063f
SHA1

058cc69117ffc8d1f184cb904672d4a8bc69bccc
SHA256

93e296579910efa85a3b68bb48ce390d542144e5544aaf6b6da1070e8bc4be75
SHA512

db5f721d8d62db05f9774fc133843e597dd2f8cd7705894b88bfd753076f6394af08fd5834dc9816d99b0d07b55d85b528346a1e67544fd3a56f7fa3092b5e13
SSDEEP

3072:Lzqm6pgjggLJ4ul7W4d14fJRTZAgENnuLt9bhaB7zltGfYoJkuCD93no2z:Lp5lt1+JR2gmuLt9bUB7zlwfYoJkb1

Score

10^/10

asyncrat defense_evasion persistence rat

Malware Config

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0009000000016ea4-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2656	JrngoznpacJ.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\JrngoznpacJ.exe = "C:\\Users\\Admin\\AppData\\Roaming\\JrngoznpacJ.exe"	JrngoznpacJ.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysService_5599 = "C:\\Users\\Admin\\AppData\\Roaming\\Sys_nhpyde5wpdu\\JrngoznpacJ_5599.exe"	JrngoznpacJ.exe

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010
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
2928	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
2824	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2532	DsAhotm_LetThereBeCarnage.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2004	powershell.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe
2656	JrngoznpacJ.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2532	DsAhotm_LetThereBeCarnage.exe
Token: SeDebugPrivilege	2656	JrngoznpacJ.exe
Token: SeDebugPrivilege	2004	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2860	2532	DsAhotm_LetThereBeCarnage.exe	30
PID 2532 wrote to memory of 2860	2532	DsAhotm_LetThereBeCarnage.exe	30
PID 2532 wrote to memory of 2860	2532	DsAhotm_LetThereBeCarnage.exe	30
PID 2532 wrote to memory of 2760	2532	DsAhotm_LetThereBeCarnage.exe	32
PID 2532 wrote to memory of 2760	2532	DsAhotm_LetThereBeCarnage.exe	32
PID 2532 wrote to memory of 2760	2532	DsAhotm_LetThereBeCarnage.exe	32
PID 2760 wrote to memory of 2928	2760	cmd.exe	34
PID 2760 wrote to memory of 2928	2760	cmd.exe	34
PID 2760 wrote to memory of 2928	2760	cmd.exe	34
PID 2860 wrote to memory of 2824	2860	cmd.exe	35
PID 2860 wrote to memory of 2824	2860	cmd.exe	35
PID 2860 wrote to memory of 2824	2860	cmd.exe	35
PID 2760 wrote to memory of 2656	2760	cmd.exe	36
PID 2760 wrote to memory of 2656	2760	cmd.exe	36
PID 2760 wrote to memory of 2656	2760	cmd.exe	36
PID 2656 wrote to memory of 2004	2656	JrngoznpacJ.exe	38
PID 2656 wrote to memory of 2004	2656	JrngoznpacJ.exe	38
PID 2656 wrote to memory of 2004	2656	JrngoznpacJ.exe	38

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\DsAhotm_LetThereBeCarnage.exe
"C:\Users\Admin\AppData\Local\Temp\DsAhotm_LetThereBeCarnage.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn JrngoznpacJ /tr 'C:\Users\Admin\AppData\Roaming\JrngoznpacJ.exe' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2860
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn JrngoznpacJ /tr 'C:\Users\Admin\AppData\Roaming\JrngoznpacJ.exe'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2824
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpA322.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2928
- - C:\Users\Admin\AppData\Roaming\JrngoznpacJ.exe
    C:\Users\Admin\AppData\Roaming\JrngoznpacJ.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2656
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -encodedCommand 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
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Obfuscated Files or Information

T1027

Command Obfuscation

T1027.010

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\CabF46F.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA322.tmp.bat

Filesize
149B

MD5
cc095b3e431094e9975fd11f189c9a89

SHA1
37ac22138154b6adb6e0f637a58cb5c355a3fb05

SHA256
c9e174462daf61c28968b86d847a4735084e78d92ed9f0a87494ad48f2b58ec9

SHA512
aed32b2fef8818f762ce44cde7051632c9ca8591fa4923e0d18ffa6284acfd2f214ffc6388445b4e24f0ee5b88d3a3da1da44870db6a4b25e877d9411cf7f35b

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

Filesize
251KB

MD5
9e732c5246739e8432d73ade12d6063f

SHA1
058cc69117ffc8d1f184cb904672d4a8bc69bccc

SHA256
93e296579910efa85a3b68bb48ce390d542144e5544aaf6b6da1070e8bc4be75

SHA512
db5f721d8d62db05f9774fc133843e597dd2f8cd7705894b88bfd753076f6394af08fd5834dc9816d99b0d07b55d85b528346a1e67544fd3a56f7fa3092b5e13

Download Submit
memory/2004-21-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/2004-22-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/2004-23-0x0000000002E50000-0x0000000002E82000-memory.dmp

Filesize
200KB

Download
memory/2004-24-0x0000000002E50000-0x0000000002E82000-memory.dmp

Filesize
200KB

Download
memory/2532-0-0x000007FEF5253000-0x000007FEF5254000-memory.dmp

Filesize
4KB

Download
memory/2532-1-0x0000000000E40000-0x0000000000E84000-memory.dmp

Filesize
272KB

Download
memory/2532-2-0x000007FEF5250000-0x000007FEF5C3C000-memory.dmp

Filesize
9.9MB

Download
memory/2532-12-0x000007FEF5250000-0x000007FEF5C3C000-memory.dmp

Filesize
9.9MB

Download
memory/2656-16-0x0000000000A20000-0x0000000000A64000-memory.dmp

Filesize
272KB

Download