asyncrat | da11a2056d3d8d11ed7e45772fa3ceca3495759b3c200271c12ff4a3cd9f2f93

General

Target

6449.exe
Size

234KB
MD5

ed9902c806bf40a5feb79ef29c4c2622
SHA1

aa65fd7f5e96deb0ed647a608171e170e08393a7
SHA256

da11a2056d3d8d11ed7e45772fa3ceca3495759b3c200271c12ff4a3cd9f2f93
SHA512

156a71e1de65b2c825914f61d8430862e0a655bed28547e7f8e856d2f1cdab1dd20d8b8b8b390dc3b095a19d17ba8faac78f6e68fba6dace1ee6e34ddd772601
SSDEEP

6144:4zWPYSc7LT8VFna9pXysJkIddwXQeYBayx4x28WQbNHx/b8ew:4z4s0Fa9IsJ3Fgg48QbNHh1w

Score

10^/10

asyncrat default defense_evasion discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Mutex

hmydzmicrk

Attributes

delay
1
install
true
install_file
NIVDIA CONTAINER.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/1CTFVWdd

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/0x000c000000023b55-9.dat	family_asyncrat

Manipulates Digital Signatures 1 TTPs 3 IoCs

Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.

SIP and Trust Provider Hijacking

T1553.003

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 0\CryptDllFindOIDInfo\1.3.6.1.4.1.311.60.3.1!7\Name = "szOID_ROOT_PROGRAM_AUTO_UPDATE_CA_REVOCATION"	certutil.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 0\CryptDllFindOIDInfo\1.3.6.1.4.1.311.60.3.2!7\Name = "szOID_ROOT_PROGRAM_AUTO_UPDATE_END_REVOCATION"	certutil.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 0\CryptDllFindOIDInfo\1.3.6.1.4.1.311.60.3.3!7\Name = "szOID_ROOT_PROGRAM_NO_OCSP_FAILOVER_TO_CRL"	certutil.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2211717155-842865201-3404093980-1000\Control Panel\International\Geo\Nation	6449.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2211717155-842865201-3404093980-1000\Control Panel\International\Geo\Nation	DJBuzzRadio.vbs

Executes dropped EXE 2 IoCs

pid	Process
2768	DJBuzzRadio.vbs
3164	NIVDIA CONTAINER.exe

Deobfuscate/Decode Files or Information 1 TTPs 1 IoCs

Payload decoded via CertUtil.

defense_evasion

Deobfuscate/Decode Files or Information

T1140

pid	Process
2460	certutil.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs

Web Service

T1102

flow	ioc
19	pastebin.com
20	pastebin.com
21	pastebin.com
16	pastebin.com
17	pastebin.com

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6449.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	certutil.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4224	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
212	schtasks.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
2768	DJBuzzRadio.vbs
3164	NIVDIA CONTAINER.exe
3164	NIVDIA CONTAINER.exe
3164	NIVDIA CONTAINER.exe
3164	NIVDIA CONTAINER.exe
3164	NIVDIA CONTAINER.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2768	DJBuzzRadio.vbs
Token: SeDebugPrivilege	3164	NIVDIA CONTAINER.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3164	NIVDIA CONTAINER.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 808 wrote to memory of 2000	808	6449.exe	85
PID 808 wrote to memory of 2000	808	6449.exe	85
PID 808 wrote to memory of 2000	808	6449.exe	85
PID 2000 wrote to memory of 2460	2000	cmd.exe	88
PID 2000 wrote to memory of 2460	2000	cmd.exe	88
PID 2000 wrote to memory of 2460	2000	cmd.exe	88
PID 2000 wrote to memory of 2768	2000	cmd.exe	89
PID 2000 wrote to memory of 2768	2000	cmd.exe	89
PID 2768 wrote to memory of 4060	2768	DJBuzzRadio.vbs	90
PID 2768 wrote to memory of 4060	2768	DJBuzzRadio.vbs	90
PID 2768 wrote to memory of 1332	2768	DJBuzzRadio.vbs	92
PID 2768 wrote to memory of 1332	2768	DJBuzzRadio.vbs	92
PID 1332 wrote to memory of 4224	1332	cmd.exe	95
PID 1332 wrote to memory of 4224	1332	cmd.exe	95
PID 4060 wrote to memory of 212	4060	cmd.exe	94
PID 4060 wrote to memory of 212	4060	cmd.exe	94
PID 1332 wrote to memory of 3164	1332	cmd.exe	98
PID 1332 wrote to memory of 3164	1332	cmd.exe	98

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\6449.exe
"C:\Users\Admin\AppData\Local\Temp\6449.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:808
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7zS823B7D97\6449.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2000
- - C:\Windows\SysWOW64\certutil.exe
    CERTUTIL -f -decode "C:\Users\Admin\AppData\Local\Temp\7zS823B7D97\6449.bat" "C:\Users\Admin\AppData\Local\Temp\DJBuzzRadio.vbs"
    3⤵
    - Manipulates Digital Signatures
    - Deobfuscate/Decode Files or Information
    - System Location Discovery: System Language Discovery
    PID:2460
- - C:\Users\Admin\AppData\Local\Temp\DJBuzzRadio.vbs
    "C:\Users\Admin\AppData\Local\Temp\DJBuzzRadio.vbs"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2768
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "NIVDIA CONTAINER" /tr '"C:\Users\Admin\AppData\Roaming\NIVDIA CONTAINER.exe"' & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4060
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /create /f /sc onlogon /rl highest /tn "NIVDIA CONTAINER" /tr '"C:\Users\Admin\AppData\Roaming\NIVDIA CONTAINER.exe"'
        5⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:212
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAE8F.tmp.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1332
    - - C:\Windows\system32\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:4224
    - - C:\Users\Admin\AppData\Roaming\NIVDIA CONTAINER.exe
        
        "C:\Users\Admin\AppData\Roaming\NIVDIA CONTAINER.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:3164

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

Deobfuscate/Decode Files or Information

1

T1140

Subvert Trust Controls

1

T1553

SIP and Trust Provider Hijacking

1

T1553.003

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\7zS823B7D97\6449.bat

Filesize
101KB

MD5
5e9f5d76a2a871a9c68fd2d6eaec88ad

SHA1
c24473e371474556bab7460ff1a46ab2193d071f

SHA256
ebfb8edf383a9f3498f301db7a12b074fcfd2041c48678527f6aaafd5ce64124

SHA512
8a03d6ac1d1ade0c2d52f6d9ee64c5549bd2c839f56fa835d72b61615ea065a1aa3e2342315a316df8b443b074dc6618098f74b0982f7dbda6a429a8e1673700

Download Submit
C:\Users\Admin\AppData\Local\Temp\DJBuzzRadio.vbs

Filesize
74KB

MD5
a3829709e4516f5abaae73e643d5dc6b

SHA1
fd28c1adc3f900bf128827ca795dbc66f9092f7b

SHA256
a9777ff383269952187a6a2983e888e6010311425f5dddd98f4f8240d717456e

SHA512
c028a01788a62a2f8c155eb54bf58fa364159329d92f25a5f47d35c1e1d3d2cba3ad2c6d33858712ce4e897edd5f0f024264ed71b51aeb6f5d21d5af91ec6b5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpAE8F.tmp.bat

Filesize
160B

MD5
42cc487938e5d4723438086d7ed39938

SHA1
f7de0c9e3137cfdd4b9896caf8ce2cbfc16079da

SHA256
48207f3f8d8650aa60c4248d551960b3936e092462689e911a45b31736b8789d

SHA512
5dd27f20a785d8dc01e7b49a24e0fa380e5bd30db2da5e640c0c955102363e50e14e12f58dc4288f8d194a53cd496716e337623d2e23c2d6c0bed452a41f208d

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/2768-11-0x00007FFE5F5B3000-0x00007FFE5F5B5000-memory.dmp

Filesize
8KB

Download
memory/2768-13-0x0000000000FC0000-0x0000000000FD8000-memory.dmp

Filesize
96KB

Download
memory/2768-15-0x00007FFE5F5B0000-0x00007FFE60071000-memory.dmp

Filesize
10.8MB

Download
memory/2768-21-0x00007FFE5F5B0000-0x00007FFE60071000-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