asyncrat | de1b9f6d4bf9909be6073eb4bb16b724a824e3d3d75baef2cfee19f538c79c7e

General

Target

07812999.exe
Size

691KB
MD5

dd505f7c59aa2882633c01034428e952
SHA1

12ffe4b71bdda14909f5d88301597f9cdf75ff94
SHA256

de1b9f6d4bf9909be6073eb4bb16b724a824e3d3d75baef2cfee19f538c79c7e
SHA512

3c79eb968ce299b91d1c456f52c3a6cd2bfd75ae6ac8f6e35c56800e3d2e3f2ceec0e95545cb7cb6c6305e2a26ff1b681c65dd3470f1e9d16b8726e9c223ebd0
SSDEEP

12288:SrgDkO3hHlWxMzIHREJVk/bq4izoW/m7GloyLwo6s7pSCpCETtwpkZQ6b98I:SMA4hHlWxMiQW/O4ue7koUos1JpfhkX4

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

191.101.130.205:6606

191.101.130.205:7707

191.101.130.205:8808

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 written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4740-146-0x0000000000400000-0x0000000000412000-memory.dmp	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

Processes:

07812999.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Control Panel\International\Geo\Nation	07812999.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

07812999.exe

description pid process target process

PID 4112 set thread context of 4740 4112 07812999.exe 07812999.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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

4908 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

3320 powershell.exe
3320 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 3320 powershell.exe

description	pid	process	target process
PID 4112 set thread context of 4740	4112	07812999.exe	07812999.exe

pid	process
4908	schtasks.exe

pid	process
3320	powershell.exe
3320	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3320	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

07812999.exe

description	pid	process	target process
PID 4112 wrote to memory of 3320	4112	07812999.exe	powershell.exe
PID 4112 wrote to memory of 3320	4112	07812999.exe	powershell.exe
PID 4112 wrote to memory of 3320	4112	07812999.exe	powershell.exe
PID 4112 wrote to memory of 4908	4112	07812999.exe	schtasks.exe
PID 4112 wrote to memory of 4908	4112	07812999.exe	schtasks.exe
PID 4112 wrote to memory of 4908	4112	07812999.exe	schtasks.exe
PID 4112 wrote to memory of 4740	4112	07812999.exe	07812999.exe
PID 4112 wrote to memory of 4740	4112	07812999.exe	07812999.exe
PID 4112 wrote to memory of 4740	4112	07812999.exe	07812999.exe
PID 4112 wrote to memory of 4740	4112	07812999.exe	07812999.exe
PID 4112 wrote to memory of 4740	4112	07812999.exe	07812999.exe
PID 4112 wrote to memory of 4740	4112	07812999.exe	07812999.exe
PID 4112 wrote to memory of 4740	4112	07812999.exe	07812999.exe
PID 4112 wrote to memory of 4740	4112	07812999.exe	07812999.exe

C:\Users\Admin\AppData\Local\Temp\07812999.exe
"C:\Users\Admin\AppData\Local\Temp\07812999.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4112

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RjBtcy.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3320

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RjBtcy" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEA6.tmp"
2⤵
- Creates scheduled task(s)
PID:4908

C:\Users\Admin\AppData\Local\Temp\07812999.exe
"C:\Users\Admin\AppData\Local\Temp\07812999.exe"
2⤵
PID:4740

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bxjeccgv.urv.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEA6.tmp
Filesize
1KB

MD5
006ef4145f04390215f1569d68014c6c

SHA1
4b1e2d6e5cda355672781d08ac444ddf000eb588

SHA256
74860049c0065fd51f9f1831ebca7be80aa12f128360385b32cfcc7232807d9d

SHA512
93320150bfd0fc765726862fbc538808d9404bbcaaed66f45c155e0001a045a3ec32ec915233b3607dff7d147cf3abcfbf49bbaa6fe9ff8b85a2bd2d45d57fcb

Download Submit
memory/3320-144-0x0000000002130000-0x0000000002166000-memory.dmp

Filesize
216KB

Download
memory/3320-176-0x0000000004640000-0x0000000004650000-memory.dmp

Filesize
64KB

Download
memory/3320-183-0x00000000070A0000-0x00000000070BA000-memory.dmp

Filesize
104KB

Download
memory/3320-152-0x00000000053B0000-0x0000000005416000-memory.dmp

Filesize
408KB

Download
memory/3320-181-0x0000000006FE0000-0x0000000007076000-memory.dmp

Filesize
600KB

Download
memory/3320-180-0x0000000006DD0000-0x0000000006DDA000-memory.dmp

Filesize
40KB

Download
memory/3320-179-0x0000000006D60000-0x0000000006D7A000-memory.dmp

Filesize
104KB

Download
memory/3320-178-0x00000000073A0000-0x0000000007A1A000-memory.dmp

Filesize
6.5MB

Download
memory/3320-147-0x0000000004C80000-0x00000000052A8000-memory.dmp

Filesize
6.2MB

Download
memory/3320-148-0x0000000004640000-0x0000000004650000-memory.dmp

Filesize
64KB

Download
memory/3320-149-0x0000000004640000-0x0000000004650000-memory.dmp

Filesize
64KB

Download
memory/3320-151-0x0000000004AB0000-0x0000000004AD2000-memory.dmp

Filesize
136KB

Download
memory/3320-184-0x0000000007080000-0x0000000007088000-memory.dmp

Filesize
32KB

Download
memory/3320-182-0x0000000006F90000-0x0000000006F9E000-memory.dmp

Filesize
56KB

Download
memory/3320-175-0x0000000005FF0000-0x000000000600E000-memory.dmp

Filesize
120KB

Download
memory/3320-163-0x0000000005A40000-0x0000000005A5E000-memory.dmp

Filesize
120KB

Download
memory/3320-164-0x0000000006C10000-0x0000000006C42000-memory.dmp

Filesize
200KB

Download
memory/3320-165-0x0000000071240000-0x000000007128C000-memory.dmp

Filesize
304KB

Download
memory/3320-158-0x0000000005420000-0x0000000005486000-memory.dmp

Filesize
408KB

Download
memory/3320-177-0x000000007F770000-0x000000007F780000-memory.dmp

Filesize
64KB

Download
memory/4112-136-0x0000000004F50000-0x0000000004F60000-memory.dmp

Filesize
64KB

Download
memory/4112-135-0x0000000004F90000-0x0000000005022000-memory.dmp

Filesize
584KB

Download
memory/4112-133-0x0000000000510000-0x00000000005C2000-memory.dmp

Filesize
712KB

Download
memory/4112-139-0x00000000082B0000-0x000000000834C000-memory.dmp

Filesize
624KB

Download
memory/4112-138-0x0000000004F50000-0x0000000004F60000-memory.dmp

Filesize
64KB

Download
memory/4112-137-0x0000000005120000-0x000000000512A000-memory.dmp

Filesize
40KB

Download
memory/4112-134-0x0000000005540000-0x0000000005AE4000-memory.dmp

Filesize
5.6MB

Download
memory/4740-146-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads