asyncrat | 81f8466583c0a4edff411a3c7a4b2a82a3ef97ebe1f03c3df99500e70c95a399

General

Target

b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
Size

243KB
MD5

d88a06a393582a79ab6da48982ec87ae
SHA1

e5cc4271431fa138f4594847c20a5be3f6c919e4
SHA256

b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537
SHA512

41c75993633bf8d1f2dd9ab956ed40510a1d7678214a5311aed096c0e4678d6df57542908c4329f2424e9cb488f15cd554b06b151e909f7c70e4ce9d9a9191ac
SSDEEP

3072:KHkVhd52JYWsfVrhbjAY1GSEuywqamd/4bWSHqYubGtHshmRgSPG9oMNLxb:KHkVhd52JdYhbt1GCE2bUwZe+PElNh

Score

10^/10

asyncrat venomrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

89.23.100.93:4449

Mutex

oonrejgwedvxwse

Attributes

delay
1
install
true
install_file
calc.exe
install_folder
%AppData%

aes.plain

Signatures

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

VenomRAT 4 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral2/memory/2016-1-0x0000000000470000-0x0000000000488000-memory.dmp	VenomRAT
behavioral2/memory/2016-5-0x0000000000400000-0x000000000043F000-memory.dmp	VenomRAT
behavioral2/memory/1180-18-0x0000000002040000-0x0000000002058000-memory.dmp	VenomRAT
behavioral2/memory/1180-22-0x0000000000400000-0x000000000043F000-memory.dmp	VenomRAT

Venomrat family
venomrat

Downloads MZ/PE file 1 IoCs

flow	pid	Process
56	2844	Process not Found

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-1-5-21-1639772215-809007892-4072230623-1000\Control Panel\International\Geo\Nation	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe

Executes dropped EXE 1 IoCs

pid	Process
1180	calc.exe

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 7 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	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	calc.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2476	MicrosoftEdgeUpdate.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3332	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
3756	schtasks.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
1180	calc.exe
1180	calc.exe
1180	calc.exe
1180	calc.exe
1180	calc.exe
1180	calc.exe
1180	calc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
Token: SeDebugPrivilege	1180	calc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1180	calc.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 1332	2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	90
PID 2016 wrote to memory of 1332	2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	90
PID 2016 wrote to memory of 1332	2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	90
PID 2016 wrote to memory of 3452	2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	92
PID 2016 wrote to memory of 3452	2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	92
PID 2016 wrote to memory of 3452	2016	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	92
PID 1332 wrote to memory of 3756	1332	cmd.exe	94
PID 1332 wrote to memory of 3756	1332	cmd.exe	94
PID 1332 wrote to memory of 3756	1332	cmd.exe	94
PID 3452 wrote to memory of 3332	3452	cmd.exe	95
PID 3452 wrote to memory of 3332	3452	cmd.exe	95
PID 3452 wrote to memory of 3332	3452	cmd.exe	95
PID 3452 wrote to memory of 1180	3452	cmd.exe	96
PID 3452 wrote to memory of 1180	3452	cmd.exe	96
PID 3452 wrote to memory of 1180	3452	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
"C:\Users\Admin\AppData\Local\Temp\b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "calc" /tr '"C:\Users\Admin\AppData\Roaming\calc.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1332
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "calc" /tr '"C:\Users\Admin\AppData\Roaming\calc.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3756
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD37C.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3452
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3332
- - C:\Users\Admin\AppData\Roaming\calc.exe
    "C:\Users\Admin\AppData\Roaming\calc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1180

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIyIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4ODkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTM2NTgwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTc3MzA2ODQ4Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:2476

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\AppLaunch.exe.log

Filesize
942B

MD5
08fd55ab7b211d3fba9ba080bb93fc07

SHA1
3519a855c1d90857159c68422848785d68a89591

SHA256
eb1d1fa6b376f369681435d4e310dc2e6e832877a6e2880640727f9390559614

SHA512
61c362ac9ac9809532be0383eb239e06290b1387bc6e49e0ab0045bd7e4b904032f8def000d4b1e4800b6387c193f4ab78f8c507138030490014104cecb726d7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD37C.tmp.bat

Filesize
148B

MD5
876761f020391d2e7c6be271634ed365

SHA1
47d3eed1934900d0cda4f496b1e4f0182c42ec8d

SHA256
effe91507879ad2fa6e95bb3773d5735f4ffb13391c3a9bdfeda093ac25f61e8

SHA512
a288c45e93421df9032f7d728748a89451d2361db7c471fd44e00d04aa53fdd165c9ac146a214b1c5256e267acbcce63a40af95c64bc81e515853dcebf231681

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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

Filesize
243KB

MD5
d88a06a393582a79ab6da48982ec87ae

SHA1
e5cc4271431fa138f4594847c20a5be3f6c919e4

SHA256
b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537

SHA512
41c75993633bf8d1f2dd9ab956ed40510a1d7678214a5311aed096c0e4678d6df57542908c4329f2424e9cb488f15cd554b06b151e909f7c70e4ce9d9a9191ac

Download Submit
memory/1180-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1180-18-0x0000000002040000-0x0000000002058000-memory.dmp

Filesize
96KB

Download
memory/1180-22-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1180-25-0x0000000005350000-0x00000000053E2000-memory.dmp

Filesize
584KB

Download
memory/1180-26-0x0000000005430000-0x000000000543A000-memory.dmp

Filesize
40KB

Download
memory/2016-6-0x0000000004AE0000-0x0000000005084000-memory.dmp

Filesize
5.6MB

Download
memory/2016-0-0x000000000041E000-0x0000000000420000-memory.dmp

Filesize
8KB

Download
memory/2016-5-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2016-1-0x0000000000470000-0x0000000000488000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads