asyncrat | 1ee1af228d0cfcf2beae5a2df53a291d24fb6213c5e453cfb09c155b20a7a965

General

Target

Infected.exe
Size

63KB
MD5

abcbbfd4f4cdcef98962ad976802fb69
SHA1

ecce5776a92707e00b28441975e73a715f9e2185
SHA256

1ee1af228d0cfcf2beae5a2df53a291d24fb6213c5e453cfb09c155b20a7a965
SHA512

e38348d3f6983e02378dd4649630fd0a39ad6428bc82aa6f2738f1ec794b9b48db7457b3009f7f65e49fc5d994dcde6105fdf72bd572086d8017558aab541100
SSDEEP

768:RdGnVhwdjndk78TQC8A+XiuazcBRL5JTk1+T4KSBGHmDbD/ph0oXQxa/qSuAdpqM:mnSdsNdSJYUbdh9QxaFuAdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

mbaper-28496.portmap.host:2420

mbaper-28496.portmap.host:28833

Attributes

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

aes.plain

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/0x0009000000023c37-11.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	Infected.exe

Executes dropped EXE 1 IoCs

pid	Process
964	Google.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
3056	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
3984	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe
4120	Infected.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4120	Infected.exe
Token: SeDebugPrivilege	964	Google.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4120 wrote to memory of 4628	4120	Infected.exe	83
PID 4120 wrote to memory of 4628	4120	Infected.exe	83
PID 4120 wrote to memory of 3512	4120	Infected.exe	84
PID 4120 wrote to memory of 3512	4120	Infected.exe	84
PID 3512 wrote to memory of 3056	3512	cmd.exe	87
PID 3512 wrote to memory of 3056	3512	cmd.exe	87
PID 4628 wrote to memory of 3984	4628	cmd.exe	88
PID 4628 wrote to memory of 3984	4628	cmd.exe	88
PID 3512 wrote to memory of 964	3512	cmd.exe	90
PID 3512 wrote to memory of 964	3512	cmd.exe	90

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\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4120
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Google" /tr '"C:\Users\Admin\AppData\Roaming\Google.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4628
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Google" /tr '"C:\Users\Admin\AppData\Roaming\Google.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3984
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp92DA.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3512
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3056
- - C:\Users\Admin\AppData\Roaming\Google.exe
    "C:\Users\Admin\AppData\Roaming\Google.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:964

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp92DA.tmp.bat

Filesize
150B

MD5
cc2f882d50c3458348a254da7c14395d

SHA1
b9c0f4b1a2b730e7f5fc6ecd5b06c2b6ad9f1890

SHA256
cf1357ab1aec549496a7d2ee5e91431be580f2fc9928bc2a5661adb432f6c296

SHA512
88586a693c4af2768b53f1ba6230a0b2f6cc6f90403ba622576f324f367c43fd2631211e2acc8d27c0914fdedf2a34b5f288578ade003680e08d76930a767890

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

Filesize
63KB

MD5
abcbbfd4f4cdcef98962ad976802fb69

SHA1
ecce5776a92707e00b28441975e73a715f9e2185

SHA256
1ee1af228d0cfcf2beae5a2df53a291d24fb6213c5e453cfb09c155b20a7a965

SHA512
e38348d3f6983e02378dd4649630fd0a39ad6428bc82aa6f2738f1ec794b9b48db7457b3009f7f65e49fc5d994dcde6105fdf72bd572086d8017558aab541100

Download Submit
memory/964-15-0x000000001CDA0000-0x000000001CE16000-memory.dmp

Filesize
472KB

Download
memory/964-16-0x000000001CE20000-0x000000001CED2000-memory.dmp

Filesize
712KB

Download
memory/964-17-0x000000001CFD0000-0x000000001CFEE000-memory.dmp

Filesize
120KB

Download
memory/4120-1-0x0000000000DD0000-0x0000000000DE6000-memory.dmp

Filesize
88KB

Download
memory/4120-0-0x00007FFD67863000-0x00007FFD67865000-memory.dmp

Filesize
8KB

Download
memory/4120-2-0x00007FFD67860000-0x00007FFD68321000-memory.dmp

Filesize
10.8MB

Download
memory/4120-8-0x00007FFD67860000-0x00007FFD68321000-memory.dmp

Filesize
10.8MB

Download
memory/4120-7-0x00007FFD67860000-0x00007FFD68321000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads