asyncrat | 15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca

General

Target

2BB4A448B0132C70A9F3C03DB54A52F3.exe
Size

453KB
MD5

2bb4a448b0132c70a9f3c03db54a52f3
SHA1

2338d8ae200271ccfcf5bb8d97c8c98c52deb43c
SHA256

15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca
SHA512

5352592d1dfb6771db491a18dda53c481aee0a072d2c511959f3e2cf9532ac176a6a2f9520b22a4d4675098e089a819f1b4da89d0ec615c9458bcff1ea4cbe29
SSDEEP

12288:3GHr/rHAbXqXVpJqrNix6LDQfLlzH1yv5p:3GHrMXqXwAx0QjO

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.6D

Botnet

Default

C2

seznam.zapto.org:6606

seznam.zapto.org:7707

seznam.zapto.org:8808

Mutex

spqniepxaluvdm

Attributes

delay
5
install
true
install_file
microssofte.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/memory/3708-4-0x00000000051E0000-0x00000000051F2000-memory.dmp	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-1-5-21-47134698-4092160662-1261813102-1000\Control Panel\International\Geo\Nation	2BB4A448B0132C70A9F3C03DB54A52F3.exe

Executes dropped EXE 1 IoCs

pid	Process
432	microssofte.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
1508	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
3184	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe
Token: SeDebugPrivilege	432	microssofte.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3708 wrote to memory of 5008	3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe	86
PID 3708 wrote to memory of 5008	3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe	86
PID 3708 wrote to memory of 5008	3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe	86
PID 3708 wrote to memory of 1372	3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe	88
PID 3708 wrote to memory of 1372	3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe	88
PID 3708 wrote to memory of 1372	3708	2BB4A448B0132C70A9F3C03DB54A52F3.exe	88
PID 5008 wrote to memory of 3184	5008	cmd.exe	90
PID 5008 wrote to memory of 3184	5008	cmd.exe	90
PID 5008 wrote to memory of 3184	5008	cmd.exe	90
PID 1372 wrote to memory of 1508	1372	cmd.exe	91
PID 1372 wrote to memory of 1508	1372	cmd.exe	91
PID 1372 wrote to memory of 1508	1372	cmd.exe	91
PID 1372 wrote to memory of 432	1372	cmd.exe	92
PID 1372 wrote to memory of 432	1372	cmd.exe	92
PID 1372 wrote to memory of 432	1372	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\2BB4A448B0132C70A9F3C03DB54A52F3.exe
"C:\Users\Admin\AppData\Local\Temp\2BB4A448B0132C70A9F3C03DB54A52F3.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn 2BB4A448B0132C70A9F3C03DB54A52F3 /tr '"C:\Users\Admin\AppData\Roaming\microssofte.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5008
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /ru system /rl highest /tn 2BB4A448B0132C70A9F3C03DB54A52F3 /tr '"C:\Users\Admin\AppData\Roaming\microssofte.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3184
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB40E.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1372
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1508
- - C:\Users\Admin\AppData\Roaming\microssofte.exe
    "C:\Users\Admin\AppData\Roaming\microssofte.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:432

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

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB40E.tmp.bat

Filesize
155B

MD5
9293615ef62cba1398e4e78019bc48b8

SHA1
88a388465e72efe8c6921b55ac0a1f399c7917e8

SHA256
d92b365e505b3d92d4a7286f5a15b848b184d1c1c671227cfece0d9b00661590

SHA512
97e3268f7ce0f9f3a49b7ac48dda6974b10310d599fa237f9cae97874b6a96d1542be14670ef8c06d10162589d2a5d9f2fd8bb26a4d9b300031961a311e83899

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

Filesize
453KB

MD5
2bb4a448b0132c70a9f3c03db54a52f3

SHA1
2338d8ae200271ccfcf5bb8d97c8c98c52deb43c

SHA256
15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca

SHA512
5352592d1dfb6771db491a18dda53c481aee0a072d2c511959f3e2cf9532ac176a6a2f9520b22a4d4675098e089a819f1b4da89d0ec615c9458bcff1ea4cbe29

Download Submit
memory/432-18-0x00000000050C0000-0x0000000005126000-memory.dmp

Filesize
408KB

Download
memory/432-16-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/432-22-0x0000000000AF0000-0x0000000000B0E000-memory.dmp

Filesize
120KB

Download
memory/432-21-0x0000000000800000-0x0000000000828000-memory.dmp

Filesize
160KB

Download
memory/432-20-0x0000000006810000-0x0000000006886000-memory.dmp

Filesize
472KB

Download
memory/432-19-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/432-17-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/3708-1-0x0000000000800000-0x0000000000878000-memory.dmp

Filesize
480KB

Download
memory/3708-3-0x00000000052B0000-0x0000000005342000-memory.dmp

Filesize
584KB

Download
memory/3708-2-0x0000000005860000-0x0000000005E04000-memory.dmp

Filesize
5.6MB

Download
memory/3708-0-0x000000007522E000-0x000000007522F000-memory.dmp

Filesize
4KB

Download
memory/3708-11-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/3708-6-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/3708-5-0x0000000005350000-0x00000000053EC000-memory.dmp

Filesize
624KB

Download
memory/3708-4-0x00000000051E0000-0x00000000051F2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads