asyncrat | 8b4f1c71738de8922b87e5a9edc2c5268c4737db0843eac102d7d95b0058db6c

General

Target

bb34cd21ee206d7806389f91f61db2e7.exe
Size

62KB
MD5

bb34cd21ee206d7806389f91f61db2e7
SHA1

e841de62327b9471bd03e4b119a2bb74c9386eaa
SHA256

8b4f1c71738de8922b87e5a9edc2c5268c4737db0843eac102d7d95b0058db6c
SHA512

ae0a359345c54489ac84f393186b48862d256c410e3dac89f1698c75c936109e00ff7d125cddd23f38a57378a48c5f14bef4fd2bc995edf4b04ffdddde88e5e9
SSDEEP

1536:Xv3TgTyogc90aJb9eVor7VcUYZR4v7qf+:XfTgTyogcOaJb99CUcxm

Score

10^/10

asyncrat youtube c rat

Malware Config

Extracted

Family

asyncrat

Version

true

Botnet

YouTube C

Mutex

RRAT_HSzLEG3X5

Attributes

delay
3
install
false
install_file
powershell Add-MpPreference -ExclusionPath C:\
install_folder
Explorer.exe
pastebin_config
http://pastebin.com/raw/KKpnJShN

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3384-133-0x00000000004A0000-0x00000000004B6000-memory.dmp	asyncrat
C:\Users\Admin\Explorer.exe	asyncrat
C:\Users\Admin\Explorer.exe	asyncrat

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

bb34cd21ee206d7806389f91f61db2e7.exeExplorer.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	bb34cd21ee206d7806389f91f61db2e7.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	Explorer.exe

Executes dropped EXE 1 IoCs

Processes:

Explorer.exe

pid process

4980 Explorer.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
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 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exeschtasks.exe

pid process

5084 schtasks.exe
4372 schtasks.exe
1352 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3672 timeout.exe

pid	process
4980	Explorer.exe

pid	process
5084	schtasks.exe
4372	schtasks.exe
1352	schtasks.exe

pid	process
3672	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

powershell.exebb34cd21ee206d7806389f91f61db2e7.exe

pid	process
1432	powershell.exe
1432	powershell.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe
3384	bb34cd21ee206d7806389f91f61db2e7.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exebb34cd21ee206d7806389f91f61db2e7.exeExplorer.exe

description	pid	process
Token: SeDebugPrivilege	1432	powershell.exe
Token: SeDebugPrivilege	3384	bb34cd21ee206d7806389f91f61db2e7.exe
Token: SeDebugPrivilege	4980	Explorer.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

bb34cd21ee206d7806389f91f61db2e7.execmd.execmd.execmd.exeExplorer.execmd.execmd.exe

description	pid	process	target process
PID 3384 wrote to memory of 3052	3384	bb34cd21ee206d7806389f91f61db2e7.exe	cmd.exe
PID 3384 wrote to memory of 3052	3384	bb34cd21ee206d7806389f91f61db2e7.exe	cmd.exe
PID 3384 wrote to memory of 3052	3384	bb34cd21ee206d7806389f91f61db2e7.exe	cmd.exe
PID 3052 wrote to memory of 1432	3052	cmd.exe	powershell.exe
PID 3052 wrote to memory of 1432	3052	cmd.exe	powershell.exe
PID 3052 wrote to memory of 1432	3052	cmd.exe	powershell.exe
PID 3384 wrote to memory of 4752	3384	bb34cd21ee206d7806389f91f61db2e7.exe	cmd.exe
PID 3384 wrote to memory of 4752	3384	bb34cd21ee206d7806389f91f61db2e7.exe	cmd.exe
PID 3384 wrote to memory of 4752	3384	bb34cd21ee206d7806389f91f61db2e7.exe	cmd.exe
PID 3384 wrote to memory of 4232	3384	bb34cd21ee206d7806389f91f61db2e7.exe	cmd.exe
PID 3384 wrote to memory of 4232	3384	bb34cd21ee206d7806389f91f61db2e7.exe	cmd.exe
PID 3384 wrote to memory of 4232	3384	bb34cd21ee206d7806389f91f61db2e7.exe	cmd.exe
PID 4752 wrote to memory of 5084	4752	cmd.exe	schtasks.exe
PID 4752 wrote to memory of 5084	4752	cmd.exe	schtasks.exe
PID 4752 wrote to memory of 5084	4752	cmd.exe	schtasks.exe
PID 4232 wrote to memory of 3672	4232	cmd.exe	timeout.exe
PID 4232 wrote to memory of 3672	4232	cmd.exe	timeout.exe
PID 4232 wrote to memory of 3672	4232	cmd.exe	timeout.exe
PID 4232 wrote to memory of 4980	4232	cmd.exe	Explorer.exe
PID 4232 wrote to memory of 4980	4232	cmd.exe	Explorer.exe
PID 4232 wrote to memory of 4980	4232	cmd.exe	Explorer.exe
PID 4980 wrote to memory of 3740	4980	Explorer.exe	cmd.exe
PID 4980 wrote to memory of 3740	4980	Explorer.exe	cmd.exe
PID 4980 wrote to memory of 3740	4980	Explorer.exe	cmd.exe
PID 4980 wrote to memory of 2164	4980	Explorer.exe	cmd.exe
PID 4980 wrote to memory of 2164	4980	Explorer.exe	cmd.exe
PID 4980 wrote to memory of 2164	4980	Explorer.exe	cmd.exe
PID 3740 wrote to memory of 4372	3740	cmd.exe	schtasks.exe
PID 3740 wrote to memory of 4372	3740	cmd.exe	schtasks.exe
PID 3740 wrote to memory of 4372	3740	cmd.exe	schtasks.exe
PID 2164 wrote to memory of 1352	2164	cmd.exe	schtasks.exe
PID 2164 wrote to memory of 1352	2164	cmd.exe	schtasks.exe
PID 2164 wrote to memory of 1352	2164	cmd.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\bb34cd21ee206d7806389f91f61db2e7.exe
"C:\Users\Admin\AppData\Local\Temp\bb34cd21ee206d7806389f91f61db2e7.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3384

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c powershell Add-MpPreference -ExclusionPath C:\
2⤵
- Suspicious use of WriteProcessMemory
PID:3052

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell Add-MpPreference -ExclusionPath C:\
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1432

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows\WindowsUpdater" /tr '"C:\Users\Admin\Explorer.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:4752

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Windows\WindowsUpdater" /tr '"C:\Users\Admin\Explorer.exe"'
3⤵
- Creates scheduled task(s)
PID:5084

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7563.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:4232

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:3672

C:\Users\Admin\Explorer.exe
"C:\Users\Admin\Explorer.exe"
3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4980

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /Cschtasks /create /f /sc ONIDLE /i 1 /rl highest /tn "Windows\WinUpdate" /tr "C:\Users\Admin\AppData\Local\explore.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:3740

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc ONIDLE /i 1 /rl highest /tn "Windows\WinUpdate" /tr "C:\Users\Admin\AppData\Local\explore.exe"
5⤵
- Creates scheduled task(s)
PID:4372

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /Cschtasks /create /f /sc ONIDLE /i 1 /rl highest /tn "Windows\WinUpdaters" /tr "cmd.exe /C powershell Add-MpPreference -ExclusionPath C:\"
4⤵
- Suspicious use of WriteProcessMemory
PID:2164

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc ONIDLE /i 1 /rl highest /tn "Windows\WinUpdaters" /tr "cmd.exe /C powershell Add-MpPreference -ExclusionPath C:\"
5⤵
- Creates scheduled task(s)
PID:1352

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

Web Service

1

T1102

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0cgegu2n.dzv.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7563.tmp.bat
Filesize
136B

MD5
a2429cd8879ee0fb73ba01d74c9ccddc

SHA1
8e5c82b8cf62fe8c8c604d6e3508969310a15cb8

SHA256
b069be92bf03b9765edd95234c98adf3d78997a24fb3549b9518b821cd2d1010

SHA512
fd56902495a5d95647f7f393f914ecf7f6510f58e50a591ca99312d9d3e40ab879e97a86753972bdf6bfbf211fae455bc666017967fcdf3605d978228006da8a

Download Submit
C:\Users\Admin\Explorer.exe
Filesize
62KB

MD5
bb34cd21ee206d7806389f91f61db2e7

SHA1
e841de62327b9471bd03e4b119a2bb74c9386eaa

SHA256
8b4f1c71738de8922b87e5a9edc2c5268c4737db0843eac102d7d95b0058db6c

SHA512
ae0a359345c54489ac84f393186b48862d256c410e3dac89f1698c75c936109e00ff7d125cddd23f38a57378a48c5f14bef4fd2bc995edf4b04ffdddde88e5e9

Download Submit
C:\Users\Admin\Explorer.exe
Filesize
62KB

MD5
bb34cd21ee206d7806389f91f61db2e7

SHA1
e841de62327b9471bd03e4b119a2bb74c9386eaa

SHA256
8b4f1c71738de8922b87e5a9edc2c5268c4737db0843eac102d7d95b0058db6c

SHA512
ae0a359345c54489ac84f393186b48862d256c410e3dac89f1698c75c936109e00ff7d125cddd23f38a57378a48c5f14bef4fd2bc995edf4b04ffdddde88e5e9

Download Submit
memory/1432-159-0x0000000070620000-0x000000007066C000-memory.dmp

Filesize
304KB

Download
memory/1432-158-0x0000000006690000-0x00000000066C2000-memory.dmp

Filesize
200KB

Download
memory/1432-139-0x0000000005220000-0x0000000005242000-memory.dmp

Filesize
136KB

Download
memory/1432-137-0x0000000002820000-0x0000000002830000-memory.dmp

Filesize
64KB

Download
memory/1432-140-0x00000000059F0000-0x0000000005A56000-memory.dmp

Filesize
408KB

Download
memory/1432-146-0x0000000005AD0000-0x0000000005B36000-memory.dmp

Filesize
408KB

Download
memory/1432-151-0x00000000060C0000-0x00000000060DE000-memory.dmp

Filesize
120KB

Download
memory/1432-138-0x0000000002820000-0x0000000002830000-memory.dmp

Filesize
64KB

Download
memory/1432-136-0x0000000005290000-0x00000000058B8000-memory.dmp

Filesize
6.2MB

Download
memory/1432-180-0x0000000007600000-0x000000000760E000-memory.dmp

Filesize
56KB

Download
memory/1432-182-0x00000000076F0000-0x00000000076F8000-memory.dmp

Filesize
32KB

Download
memory/1432-169-0x0000000006600000-0x000000000661E000-memory.dmp

Filesize
120KB

Download
memory/1432-170-0x000000007F1B0000-0x000000007F1C0000-memory.dmp

Filesize
64KB

Download
memory/1432-171-0x0000000002820000-0x0000000002830000-memory.dmp

Filesize
64KB

Download
memory/1432-172-0x0000000007A10000-0x000000000808A000-memory.dmp

Filesize
6.5MB

Download
memory/1432-173-0x00000000073D0000-0x00000000073EA000-memory.dmp

Filesize
104KB

Download
memory/1432-174-0x0000000007440000-0x000000000744A000-memory.dmp

Filesize
40KB

Download
memory/1432-175-0x0000000007650000-0x00000000076E6000-memory.dmp

Filesize
600KB

Download
memory/1432-135-0x00000000027D0000-0x0000000002806000-memory.dmp

Filesize
216KB

Download
memory/1432-181-0x0000000007710000-0x000000000772A000-memory.dmp

Filesize
104KB

Download
memory/3384-152-0x0000000005B50000-0x0000000005BEC000-memory.dmp

Filesize
624KB

Download
memory/3384-134-0x0000000004F00000-0x0000000004F10000-memory.dmp

Filesize
64KB

Download
memory/3384-133-0x00000000004A0000-0x00000000004B6000-memory.dmp

Filesize
88KB

Download
memory/4980-179-0x00000000049F0000-0x0000000004A00000-memory.dmp

Filesize
64KB

Download
memory/4980-186-0x00000000049F0000-0x0000000004A00000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads