asyncrat | 2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982

Analysis

max time kernel
147s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-12-2024 00:52

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General

Target

2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982.exe
Size

60KB
MD5

5b29d55280fbe57e4a9c22c155288061
SHA1

5456a06ad792bac192f961ac4901227f6825084e
SHA256

2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982
SHA512

9ba6d4effb2a304f047149f6fa199607c24338460cdf9c78cfed22d07cb15f087e4d7e28d8bb19949dc4f5a6536b4ad2b4590eb4991ecbad69509411d8236b36
SSDEEP

1536:fZBkdsU4s4YLnN9054AxcRkbu79EnhO023fI:bk5LnD05ikbuxGO023Q

Score

10^/10

asyncrat stormkitty venomrat xworm default discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

213.136.90.188:7000

Attributes

Install_directory
%Userprofile%
install_file
Microsoft Edgs.exe

Extracted

Family

asyncrat

Version

Tsurugi RATs

Botnet

Default

213.136.90.188:4449

Mutex

zteprqyjlfgxrxuaid

Attributes

delay
1
install
true
install_file
Check Windows Update.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

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral1/memory/2656-19-0x0000000001FA0000-0x0000000001FAE000-memory.dmp	disable_win_def

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2656-1-0x0000000000B80000-0x0000000000B96000-memory.dmp	family_xworm

StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

resource	yara_rule
behavioral1/memory/2656-17-0x000000001C880000-0x000000001C9A0000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

VenomRAT 3 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/files/0x000800000001658c-13.dat	VenomRAT
behavioral1/memory/2992-15-0x00000000009B0000-0x00000000009C8000-memory.dmp	VenomRAT
behavioral1/memory/2324-65-0x0000000000300000-0x0000000000318000-memory.dmp	VenomRAT

Venomrat family
venomrat
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000800000001658c-13.dat	family_asyncrat

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Edgs.lnk	2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Edgs.lnk	2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982.exe

Executes dropped EXE 2 IoCs

pid	Process
2992	uokkrf.exe
2324	Check Windows Update.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft Edgs = "C:\\Users\\Admin\\Microsoft Edgs.exe"	2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982.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
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
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
1972	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
2888	schtasks.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
2992	uokkrf.exe
2992	uokkrf.exe
2992	uokkrf.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe
2324	Check Windows Update.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2656	2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982.exe
Token: SeDebugPrivilege	2992	uokkrf.exe
Token: SeDebugPrivilege	2324	Check Windows Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2324	Check Windows Update.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 2992	2656	2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982.exe	31
PID 2656 wrote to memory of 2992	2656	2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982.exe	31
PID 2656 wrote to memory of 2992	2656	2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982.exe	31
PID 2992 wrote to memory of 2168	2992	uokkrf.exe	32
PID 2992 wrote to memory of 2168	2992	uokkrf.exe	32
PID 2992 wrote to memory of 2168	2992	uokkrf.exe	32
PID 2992 wrote to memory of 2064	2992	uokkrf.exe	33
PID 2992 wrote to memory of 2064	2992	uokkrf.exe	33
PID 2992 wrote to memory of 2064	2992	uokkrf.exe	33
PID 2168 wrote to memory of 2888	2168	cmd.exe	36
PID 2168 wrote to memory of 2888	2168	cmd.exe	36
PID 2168 wrote to memory of 2888	2168	cmd.exe	36
PID 2064 wrote to memory of 1972	2064	cmd.exe	37
PID 2064 wrote to memory of 1972	2064	cmd.exe	37
PID 2064 wrote to memory of 1972	2064	cmd.exe	37
PID 2064 wrote to memory of 2324	2064	cmd.exe	38
PID 2064 wrote to memory of 2324	2064	cmd.exe	38
PID 2064 wrote to memory of 2324	2064	cmd.exe	38

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\2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982.exe
"C:\Users\Admin\AppData\Local\Temp\2ad0b8e8c41f65839f0c2dda4e2a39b0e8a844ec3d67fef7e79a690ab56b4982.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2656
- C:\Users\Admin\AppData\Local\Temp\uokkrf.exe
  "C:\Users\Admin\AppData\Local\Temp\uokkrf.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2992
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Check Windows Update" /tr '"C:\Users\Admin\AppData\Roaming\Check Windows Update.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2168
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "Check Windows Update" /tr '"C:\Users\Admin\AppData\Roaming\Check Windows Update.exe"'
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2888
- - C:\Windows\system32\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp9EFD.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2064
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:1972
  - - C:\Users\Admin\AppData\Roaming\Check Windows Update.exe
      "C:\Users\Admin\AppData\Roaming\Check Windows Update.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabAF93.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarC048.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9EFD.tmp.bat

Filesize
164B

MD5
5b1e5427bd9e15d306f4b9654a925d23

SHA1
7f0f65ae47cb2b3b79356fc7b1f097034d766328

SHA256
1ab17c039d6fd13a306b4a9fbf27baed7d948ff7e8f55dc91823e1abe95cf3b7

SHA512
b28785a3fdc7cab223d79029f71765189cd05cb0a2aac8ac12acae7553f89beb00b2e5f622c742421162c570c608201e963588df1f542638e5b8d77de0960f91

Download Submit
C:\Users\Admin\AppData\Local\Temp\uokkrf.exe

Filesize
74KB

MD5
5b43e7355fd90aff498f34f9c9abe5a0

SHA1
ced829ab27f09bb9316a95617e027dfa052f0955

SHA256
235acf44d2a24f518dc53f3eda92ffb9fbe2546c37d9e5fb951eb282c782f3c7

SHA512
a703c4e821e40361b1da8a1687fbb7e394efa81c19e386f0037b1380e1949f58219cf0b69e8ec1eee068a7cf5667c933437a3382e2f1cc9f20b438df3b35a5c0

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/2324-65-0x0000000000300000-0x0000000000318000-memory.dmp

Filesize
96KB

Download
memory/2656-27-0x000000001AB90000-0x000000001ABA6000-memory.dmp

Filesize
88KB

Download
memory/2656-24-0x000000001BAE0000-0x000000001BB86000-memory.dmp

Filesize
664KB

Download
memory/2656-17-0x000000001C880000-0x000000001C9A0000-memory.dmp

Filesize
1.1MB

Download
memory/2656-1-0x0000000000B80000-0x0000000000B96000-memory.dmp

Filesize
88KB

Download
memory/2656-19-0x0000000001FA0000-0x0000000001FAE000-memory.dmp

Filesize
56KB

Download
memory/2656-20-0x000000001D4A0000-0x000000001D782000-memory.dmp

Filesize
2.9MB

Download
memory/2656-21-0x0000000001FC0000-0x0000000001FDC000-memory.dmp

Filesize
112KB

Download
memory/2656-22-0x000000001B090000-0x000000001B0D8000-memory.dmp

Filesize
288KB

Download
memory/2656-23-0x000000001A660000-0x000000001A668000-memory.dmp

Filesize
32KB

Download
memory/2656-6-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2656-25-0x000000001B540000-0x000000001B574000-memory.dmp

Filesize
208KB

Download
memory/2656-26-0x000000001BCD0000-0x000000001BD1A000-memory.dmp

Filesize
296KB

Download
memory/2656-0-0x000007FEF5DB3000-0x000007FEF5DB4000-memory.dmp

Filesize
4KB

Download
memory/2656-7-0x000007FEF5DB3000-0x000007FEF5DB4000-memory.dmp

Filesize
4KB

Download
memory/2656-8-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2992-61-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2992-59-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2992-14-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2992-15-0x00000000009B0000-0x00000000009C8000-memory.dmp

Filesize
96KB

Download
memory/2992-18-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download