asyncrat | c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64

General

Target

c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe
Size

77KB
MD5

d7fdc3235eba3280a7ee70a30b97193a
SHA1

d52a9e290a46919c1cefb4b96c2055f81983e45f
SHA256

c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64
SHA512

afff2be759992d029d47a198bcf08612d9ae6399d0d3da14c7ff694735bf22cface56092b8d4f1df30daf790798cffc5123a1669487309d313dcd0cdcf3a5202
SSDEEP

1536:OUakcxw+/9CZSPMVae9VdQuDI6H1bf/r3EQzcCLVclN:OUTcxw+1uSPMVae9VdQsH1bfYQbBY

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

185.162.75.19:4449

Mutex

clnivizlzzwamiwcu

Attributes

delay
1
install
true
install_file
VenomClient.exe
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

resource	yara_rule
behavioral1/files/0x00090000000160d9-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2744	VenomClient.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2816	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
2756	schtasks.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
2416	c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe
2416	c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe
2416	c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe
2744	VenomClient.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2416	c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe
Token: SeDebugPrivilege	2744	VenomClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2744	VenomClient.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2416 wrote to memory of 2372	2416	c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe	30
PID 2416 wrote to memory of 2372	2416	c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe	30
PID 2416 wrote to memory of 2372	2416	c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe	30
PID 2416 wrote to memory of 2408	2416	c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe	31
PID 2416 wrote to memory of 2408	2416	c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe	31
PID 2416 wrote to memory of 2408	2416	c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe	31
PID 2372 wrote to memory of 2756	2372	cmd.exe	34
PID 2372 wrote to memory of 2756	2372	cmd.exe	34
PID 2372 wrote to memory of 2756	2372	cmd.exe	34
PID 2408 wrote to memory of 2816	2408	cmd.exe	35
PID 2408 wrote to memory of 2816	2408	cmd.exe	35
PID 2408 wrote to memory of 2816	2408	cmd.exe	35
PID 2408 wrote to memory of 2744	2408	cmd.exe	37
PID 2408 wrote to memory of 2744	2408	cmd.exe	37
PID 2408 wrote to memory of 2744	2408	cmd.exe	37

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\c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe
"C:\Users\Admin\AppData\Local\Temp\c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2416
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "VenomClient" /tr '"C:\Users\Admin\AppData\Roaming\VenomClient.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2372
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "VenomClient" /tr '"C:\Users\Admin\AppData\Roaming\VenomClient.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2756
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpCED3.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2408
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2816
- - C:\Users\Admin\AppData\Roaming\VenomClient.exe
    "C:\Users\Admin\AppData\Roaming\VenomClient.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2744

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

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabE35F.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarF58B.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCED3.tmp.bat

Filesize
155B

MD5
c9ddd787424cf2ba23522988a97ed791

SHA1
572e4521cb78556a3986d3a0ed34fe15c06809e0

SHA256
a02f3e865521d113915e3e236b35cf994112084d4477b743a2c0401935d883e5

SHA512
4d45ee4b2a691fcfd7207cdd8cc7ce1d10566ff3c28d1645e8f90ffaa9292d6e5e86910ffec0b292789fc3516a710a9ae7996c92e61fecaa12e43ce976a2fac6

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\VenomClient.exe

Filesize
77KB

MD5
d7fdc3235eba3280a7ee70a30b97193a

SHA1
d52a9e290a46919c1cefb4b96c2055f81983e45f

SHA256
c52fa3a0f171271b2b9a962c581b2183cdcf66622e35f9ec4530a26b13c6ba64

SHA512
afff2be759992d029d47a198bcf08612d9ae6399d0d3da14c7ff694735bf22cface56092b8d4f1df30daf790798cffc5123a1669487309d313dcd0cdcf3a5202

Download Submit
memory/2416-0-0x000007FEF5C73000-0x000007FEF5C74000-memory.dmp

Filesize
4KB

Download
memory/2416-1-0x0000000000C50000-0x0000000000C68000-memory.dmp

Filesize
96KB

Download
memory/2416-3-0x000007FEF5C70000-0x000007FEF665C000-memory.dmp

Filesize
9.9MB

Download
memory/2416-11-0x000007FEF5C70000-0x000007FEF665C000-memory.dmp

Filesize
9.9MB

Download
memory/2416-13-0x000007FEF5C70000-0x000007FEF665C000-memory.dmp

Filesize
9.9MB

Download
memory/2744-18-0x0000000000140000-0x0000000000158000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads