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/0x00290000000461c6-11.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-1-5-21-1006597246-3150276181-3318461161-1000\Control Panel\International\Geo\Nation	Infected.exe

Executes dropped EXE 1 IoCs

pid	Process
2980	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
1228	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
4104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe
3828	Infected.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3828	Infected.exe
Token: SeDebugPrivilege	2980	Google.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3828 wrote to memory of 1740	3828	Infected.exe	80
PID 3828 wrote to memory of 1740	3828	Infected.exe	80
PID 3828 wrote to memory of 1116	3828	Infected.exe	81
PID 3828 wrote to memory of 1116	3828	Infected.exe	81
PID 1740 wrote to memory of 4104	1740	cmd.exe	84
PID 1740 wrote to memory of 4104	1740	cmd.exe	84
PID 1116 wrote to memory of 1228	1116	cmd.exe	85
PID 1116 wrote to memory of 1228	1116	cmd.exe	85
PID 1116 wrote to memory of 2980	1116	cmd.exe	86
PID 1116 wrote to memory of 2980	1116	cmd.exe	86

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:3828
- 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:1740
- - 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:4104
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBA09.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1116
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1228
- - C:\Users\Admin\AppData\Roaming\Google.exe
    "C:\Users\Admin\AppData\Roaming\Google.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2980

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\tmpBA09.tmp.bat

Filesize
150B

MD5
62fc91f9de77c0026af6b51f3b1f5098

SHA1
8ffc8306997d6c2c3ed5a15d51a1834a9171b5c2

SHA256
a715c8695430833bed3e7f12a874c106169176bfe8ca91cf03fae0d9dbe83f3b

SHA512
a068a5ae9b7b23a58e3909a544c639b3764b26212df2eea6090eae99504046e41cd4134bbc8f2f05b40314c0374ddf188f07d6e1dea9d54178e15cdabc33bfa3

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

Filesize
63KB

MD5
abcbbfd4f4cdcef98962ad976802fb69

SHA1
ecce5776a92707e00b28441975e73a715f9e2185

SHA256
1ee1af228d0cfcf2beae5a2df53a291d24fb6213c5e453cfb09c155b20a7a965

SHA512
e38348d3f6983e02378dd4649630fd0a39ad6428bc82aa6f2738f1ec794b9b48db7457b3009f7f65e49fc5d994dcde6105fdf72bd572086d8017558aab541100

Download Submit
memory/2980-15-0x000000001CD80000-0x000000001CDF6000-memory.dmp

Filesize
472KB

Download
memory/2980-16-0x000000001CD00000-0x000000001CD34000-memory.dmp

Filesize
208KB

Download
memory/2980-17-0x000000001CD50000-0x000000001CD6E000-memory.dmp

Filesize
120KB

Download
memory/3828-0-0x00007FFB42233000-0x00007FFB42235000-memory.dmp

Filesize
8KB

Download
memory/3828-1-0x0000000000880000-0x0000000000896000-memory.dmp

Filesize
88KB

Download
memory/3828-2-0x00007FFB42230000-0x00007FFB42CF2000-memory.dmp

Filesize
10.8MB

Download
memory/3828-3-0x00007FFB42230000-0x00007FFB42CF2000-memory.dmp

Filesize
10.8MB

Download
memory/3828-8-0x00007FFB42230000-0x00007FFB42CF2000-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