asyncrat | d887cb08f3853f6fba580b6e71bc4874eed4fc90fdd7d2727fd69aae7de05539

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
18/05/2024, 01:19

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General

Target
694017fca8a3c90fafba23fbc3875270_NeikiAnalytics.exe
Size 3.2MB
Sample240518-bpswlsdc5w
SHA256 d887cb08f3853f6fba580b6e71bc4874eed4fc90fdd7d2727fd69aae7de05539
MD5 694017fca8a3c90fafba23fbc3875270
SHA1 cf83b6eedd85d8624dab98887abe4b30c438e24a
SHA512 7698921be602b72880d8b6a1caac14838e0ac6f65a65664f32c2eaed4aeac7543624c42d12c1b52430d387b02b88b7ebf58b0aae1e1bd7646575903cffbbf389
SSDEEP 98304:6oiMOWNF0qFeYGX/p/4m83GlvpoRyl/nnqi23jT0boa:ZO8F0oQ8GvaR0nqiKXkoa
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat rat

Malware Config

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
behavioral2/files/0x000900000002336a-24.dat	family_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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	694017fca8a3c90fafba23fbc3875270_NeikiAnalytics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe	694017fca8a3c90fafba23fbc3875270_NeikiAnalytics.exe

Executes dropped EXE 3 IoCs

pid	Process
4392	LimeRAT.exe
4612	svchost.exe
4992	svchost.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
26	pastebin.com
29	pastebin.com
39	pastebin.com

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
1744	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2332	timeout.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe
4612	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4612	svchost.exe
Token: SeDebugPrivilege	4992	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3884 wrote to memory of 4392	3884	694017fca8a3c90fafba23fbc3875270_NeikiAnalytics.exe	86
PID 3884 wrote to memory of 4392	3884	694017fca8a3c90fafba23fbc3875270_NeikiAnalytics.exe	86
PID 3884 wrote to memory of 4612	3884	694017fca8a3c90fafba23fbc3875270_NeikiAnalytics.exe	87
PID 3884 wrote to memory of 4612	3884	694017fca8a3c90fafba23fbc3875270_NeikiAnalytics.exe	87
PID 4612 wrote to memory of 3804	4612	svchost.exe	93
PID 4612 wrote to memory of 3804	4612	svchost.exe	93
PID 4612 wrote to memory of 2884	4612	svchost.exe	95
PID 4612 wrote to memory of 2884	4612	svchost.exe	95
PID 2884 wrote to memory of 2332	2884	cmd.exe	98
PID 2884 wrote to memory of 2332	2884	cmd.exe	98
PID 3804 wrote to memory of 1744	3804	cmd.exe	97
PID 3804 wrote to memory of 1744	3804	cmd.exe	97
PID 2884 wrote to memory of 4992	2884	cmd.exe	101
PID 2884 wrote to memory of 4992	2884	cmd.exe	101

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\694017fca8a3c90fafba23fbc3875270_NeikiAnalytics.exe
"C:\Users\Admin\AppData\Local\Temp\694017fca8a3c90fafba23fbc3875270_NeikiAnalytics.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:3884
- C:\Users\Admin\AppData\Local\Temp\LimeRAT.exe
  "C:\Users\Admin\AppData\Local\Temp\LimeRAT.exe"
  2⤵
  - Executes dropped EXE
  PID:4392
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4612
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3804
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
      4⤵
      Creates scheduled task(s)
      PID:1744
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp43A0.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2884
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:2332
  - - C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:4992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

svchost.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log
Size 425B
SHA256 b8f7e4ed81764db56b9c09050f68c5a26af78d8a5e2443e75e0e1aa7cd2ccd76
MD5 fff5cbccb6b31b40f834b8f4778a779a
SHA1 899ed0377e89f1ed434cfeecc5bc0163ebdf0454
SHA512 1a188a14c667bc31d2651b220aa762be9cce4a75713217846fbe472a307c7bbc6e3c27617f75f489902a534d9184648d204d03ee956ac57b11aa90551248b8f9
MD5 SHA1 SHA512

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LimeRAT.exe

Path C:\Users\Admin\AppData\Local\Temp\LimeRAT.exe
Size 7.1MB
SHA256 f66cd4358ca7adba2438ae7575cf800c74ce91ff38583db24b15902990320916
MD5 67dedc86d658ffc80c9f9a7ae7f915d7
SHA1 896a3d5086bc93697d504aa0e72e0b3a4b08fb2e
SHA512 97fae61d5983ab7f22039c811efa2917fdd1accf6839af753a3d6b2c38cd721dd0e6e5f30188b5f8c1e8e11c200993cad24800c7f9c7e5e0e76797a44105749e
SSDEEP 98304:2feCKILa67dos6bI0LO6rAXeb+N99rPmpVzY+QubLmok3VH:2feDIB7Z0/wL99rPm1QubLmoU5
MD5 SHA1 SHA512 SSDEEP

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tmp43A0.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp43A0.tmp.bat
Size 151B
SHA256 84127c2e876a255f9d27ff615cd1380efc528e1f2d97bc0ed32c8d6a27533c33
MD5 76b52e4c75032bc826297c7aefa97e92
SHA1 872e8cd93b08fe9119ffba5e7f8109fcd30b674e
SHA512 15998794fd2acf1a1081f05e7cab0ab8983c13399a9ba69fae9e025b00de430b6c5a10b20bb1ab54b6124ec1f0db500341d63eca81335f2c82cf1f6ba1e91c0f
MD5 SHA1 SHA512

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svchost.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe
Size 181KB
SHA256 cd69caac229927922793df75787e273392d3ef8860474e5d0f9721298e165d50
MD5 0949dfe0f32c1fd940ac9e694021cf5a
SHA1 b0c0620dd217c04af48468435a00cfa08fa3ff67
SHA512 f83a2758020e45cf2b3d0dd008b46c61e9f364c4ee4fe38044b4385599082aff07665dd5680b7df8a3aa3ee2e297505f31f7a71c0e87ca29564a91324bfaa1c5
SSDEEP 3072:C8sMJItHpLV7+gauMUOU5bo0QhGbbUKAptruGSdCAVKOY:x0tHpBaud5bonkb7Aptrc
MD5 SHA1 SHA512 SSDEEP

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memory/3884-30-0x00007FFA54790000-0x00007FFA55251000-memory.dmp

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memory/3884-1-0x0000000000160000-0x00000000004A0000-memory.dmp

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memory/3884-3-0x00007FFA54790000-0x00007FFA55251000-memory.dmp

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memory/3884-0-0x00007FFA54793000-0x00007FFA54795000-memory.dmp

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memory/4392-29-0x0000021B52360000-0x0000021B52A7C000-memory.dmp

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memory/4392-28-0x00007FFA54790000-0x00007FFA55251000-memory.dmp

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memory/4392-32-0x00007FFA54790000-0x00007FFA55251000-memory.dmp

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memory/4612-27-0x000000001BA70000-0x000000001BA76000-memory.dmp

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memory/4612-38-0x00007FFA54790000-0x00007FFA55251000-memory.dmp

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memory/4612-31-0x00007FFA54790000-0x00007FFA55251000-memory.dmp

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memory/4612-26-0x0000000000E30000-0x0000000000E66000-memory.dmp

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