asyncrat | 2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1

General

Target

2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
Size

63KB
MD5

1644c4839846a1b6524e38071528a564
SHA1

2250bbb322087bf0ba0a26a83b0e11ce5da6733d
SHA256

2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1
SHA512

06c28e8198d75aa5df58d678ae6145e388c5ee41f9f06b5de89e06fd821c91d5b4ef5cf3305493697eb870f0f9ab41b1e4b4de50301d0c3cf6a471de0c04eb98
SSDEEP

1536:VYQj1F212+iqsUbDh9xrsGu1SdpqKmY7:KKM1DhsUbD9HGz

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

45.139.198.242:6606

Attributes

delay
1
install
true
install_file
MicrosoftServices.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/0x000300000002aa73-11.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
4608	MicrosoftServices.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
4652	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
364	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
Token: SeDebugPrivilege	4608	MicrosoftServices.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4624 wrote to memory of 1304	4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe	83
PID 4624 wrote to memory of 1304	4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe	83
PID 4624 wrote to memory of 1832	4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe	85
PID 4624 wrote to memory of 1832	4624	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe	85
PID 1304 wrote to memory of 364	1304	cmd.exe	87
PID 1304 wrote to memory of 364	1304	cmd.exe	87
PID 1832 wrote to memory of 4652	1832	cmd.exe	88
PID 1832 wrote to memory of 4652	1832	cmd.exe	88
PID 1832 wrote to memory of 4608	1832	cmd.exe	89
PID 1832 wrote to memory of 4608	1832	cmd.exe	89

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\2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
"C:\Users\Admin\AppData\Local\Temp\2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4624
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftServices" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1304
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftServices" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:364
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDFA2.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1832
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4652
- - C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe
    "C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpDFA2.tmp.bat

Filesize
161B

MD5
f5781026507c5092b02d64ea5422c424

SHA1
000bb83f50a319fa973d4505e533222667223c74

SHA256
fd2da231467f12b85d24ba9a962b75adfaae6a2ed5e96c1045f5efc83bdb5a26

SHA512
97fe2f1b64f48a74e42548d01e1f20c2edc4030a392097fe8cdb1640b7e7ae61a117c8477359eea146d8b2820965ba0ae5a78c33fa0c933f041c990ba2f3d880

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

Filesize
63KB

MD5
1644c4839846a1b6524e38071528a564

SHA1
2250bbb322087bf0ba0a26a83b0e11ce5da6733d

SHA256
2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1

SHA512
06c28e8198d75aa5df58d678ae6145e388c5ee41f9f06b5de89e06fd821c91d5b4ef5cf3305493697eb870f0f9ab41b1e4b4de50301d0c3cf6a471de0c04eb98

Download Submit
memory/4624-0-0x00007FFBF2513000-0x00007FFBF2515000-memory.dmp

Filesize
8KB

Download
memory/4624-1-0x0000000000410000-0x0000000000426000-memory.dmp

Filesize
88KB

Download
memory/4624-2-0x00007FFBF2510000-0x00007FFBF2FD2000-memory.dmp

Filesize
10.8MB

Download
memory/4624-3-0x00007FFBF2510000-0x00007FFBF2FD2000-memory.dmp

Filesize
10.8MB

Download
memory/4624-8-0x00007FFBF2510000-0x00007FFBF2FD2000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads