asyncrat | 21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96

General

Target

21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe
Size

534KB
MD5

5d444963cb8edc7745fcc4d6e8d31358
SHA1

6f40cbe3a55c80e84f503a5f33557a125aac8a8a
SHA256

21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96
SHA512

382d11a72e1c01fba20a5130b2917fa85e51a9a347172a69535adab17d5a8f66fa85f43862c39887907c08e0be809b2867e6f9154f199857a57ab6dc5797c242
SSDEEP

12288:DP/ReMHgqTPWORNdHq9D5CTROMDCJ+0cWeh3ih9HdA:zpeWbC9ATKo0cBYTG

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

192.3.193.136:2023

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1484-67-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1484-68-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1484-69-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1484-70-0x000000000040C72E-mapping.dmp	asyncrat
behavioral1/memory/1484-72-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1484-74-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Suspicious use of SetThreadContext 1 IoCs

Processes:

21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe

description	pid	process	target process
PID 1532 set thread context of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1492 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

1396 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1396 powershell.exe
Token: SeDebugPrivilege 1484 RegSvcs.exe

pid	process
1492	schtasks.exe

pid	process
1396	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1396	powershell.exe
Token: SeDebugPrivilege	1484	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe

description	pid	process	target process
PID 1532 wrote to memory of 1396	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	powershell.exe
PID 1532 wrote to memory of 1396	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	powershell.exe
PID 1532 wrote to memory of 1396	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	powershell.exe
PID 1532 wrote to memory of 1396	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	powershell.exe
PID 1532 wrote to memory of 1492	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	schtasks.exe
PID 1532 wrote to memory of 1492	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	schtasks.exe
PID 1532 wrote to memory of 1492	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	schtasks.exe
PID 1532 wrote to memory of 1492	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	schtasks.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe
PID 1532 wrote to memory of 1484	1532	21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe
"C:\Users\Admin\AppData\Local\Temp\21b1d3298f190b1e90d3dc38d14fff7961854ee431ef70d10d3186ac36f3cd96.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1532

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jAxbfAeqT.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1396

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jAxbfAeqT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB33A.tmp"
2⤵
- Creates scheduled task(s)
PID:1492

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1484

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB33A.tmp
Filesize
1KB

MD5
0280c614dd21240b41760b29850800cd

SHA1
a8a36566fce26ca0b4f67c8534fe1aee9655ee34

SHA256
7aeb7585bf9d17ffe7189f29c62aeffa82fd52571f11741193e2505728983413

SHA512
7b6a42228506d0b67fe2bac6782ba056ed6ad533314da19f2882682391cfa5efeaedbcb056946eeb43b42dfc3dc5ac0b888d5f05153e1a4f72b9510d8d2ce468

Download Submit
memory/1396-59-0x0000000000000000-mapping.dmp

Download
memory/1396-76-0x000000006D410000-0x000000006D9BB000-memory.dmp

Filesize
5.7MB

Download
memory/1396-75-0x000000006D410000-0x000000006D9BB000-memory.dmp

Filesize
5.7MB

Download
memory/1484-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1484-72-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1484-74-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1484-70-0x000000000040C72E-mapping.dmp

Download
memory/1484-69-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1484-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1484-67-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1484-68-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1492-60-0x0000000000000000-mapping.dmp

Download
memory/1532-58-0x00000000007C0000-0x000000000080E000-memory.dmp

Filesize
312KB

Download
memory/1532-63-0x0000000004710000-0x0000000004724000-memory.dmp

Filesize
80KB

Download
memory/1532-54-0x0000000000E80000-0x0000000000F0C000-memory.dmp

Filesize
560KB

Download
memory/1532-57-0x0000000000270000-0x000000000027A000-memory.dmp

Filesize
40KB

Download
memory/1532-56-0x0000000000200000-0x0000000000214000-memory.dmp

Filesize
80KB

Download
memory/1532-55-0x0000000076941000-0x0000000076943000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads