asyncrat | caf642fb3b0b025f018be00082dfc2c068a57c75fb0f1efa63e04b9ab0f4e654

General

Target

updater.exe
Size

58KB
MD5

ee5b9ebce290a31f433d2f0a7c0a68c7
SHA1

bf43d58541c0414d688c32a3e5ad6e26adb61139
SHA256

caf642fb3b0b025f018be00082dfc2c068a57c75fb0f1efa63e04b9ab0f4e654
SHA512

36aa1ca70e064dd78b0722e6510c79d8d5896c2986edd53323d3776d37c46a14a359f2292009218c5e9efb4aef3b4a71198da1298197d5c4509415d32f5a695b
SSDEEP

1536:muyCNTAGL2JXJd6KmbU42bSaNTAnrq4dY90+Yp:muyeTAGL2JXJQKmI42bSFnrq4n+Yp

Score

10^/10

asyncrat niggers rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Niggers

Mutex

bSO9sTEW154P

Attributes

delay
5
install
true
install_file
updater.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/Hbm5qNCB

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
behavioral2/files/0x000500000001e3ca-12.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-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation	updater.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation	updater.exe

Executes dropped EXE 1 IoCs

pid	Process
1124	updater.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
14	pastebin.com
15	pastebin.com

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

System Information Discovery
T1082

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
4612	timeout.exe
2796	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
3156	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe
1712	updater.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	updater.exe
Token: SeDebugPrivilege	1124	updater.exe
Token: SeDebugPrivilege	1124	updater.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 4512	1712	updater.exe	86
PID 1712 wrote to memory of 4512	1712	updater.exe	86
PID 1712 wrote to memory of 4512	1712	updater.exe	86
PID 1712 wrote to memory of 2120	1712	updater.exe	88
PID 1712 wrote to memory of 2120	1712	updater.exe	88
PID 1712 wrote to memory of 2120	1712	updater.exe	88
PID 2120 wrote to memory of 4612	2120	cmd.exe	91
PID 2120 wrote to memory of 4612	2120	cmd.exe	91
PID 2120 wrote to memory of 4612	2120	cmd.exe	91
PID 4512 wrote to memory of 3156	4512	cmd.exe	90
PID 4512 wrote to memory of 3156	4512	cmd.exe	90
PID 4512 wrote to memory of 3156	4512	cmd.exe	90
PID 2120 wrote to memory of 1124	2120	cmd.exe	92
PID 2120 wrote to memory of 1124	2120	cmd.exe	92
PID 2120 wrote to memory of 1124	2120	cmd.exe	92
PID 1124 wrote to memory of 4920	1124	updater.exe	93
PID 1124 wrote to memory of 4920	1124	updater.exe	93
PID 1124 wrote to memory of 4920	1124	updater.exe	93
PID 1124 wrote to memory of 1840	1124	updater.exe	95
PID 1124 wrote to memory of 1840	1124	updater.exe	95
PID 1124 wrote to memory of 1840	1124	updater.exe	95
PID 4920 wrote to memory of 1568	4920	cmd.exe	97
PID 4920 wrote to memory of 1568	4920	cmd.exe	97
PID 4920 wrote to memory of 1568	4920	cmd.exe	97
PID 1840 wrote to memory of 2796	1840	cmd.exe	98
PID 1840 wrote to memory of 2796	1840	cmd.exe	98
PID 1840 wrote to memory of 2796	1840	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\updater.exe
"C:\Users\Admin\AppData\Local\Temp\updater.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "updater" /tr '"C:\Users\Admin\AppData\Roaming\updater.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4512
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "updater" /tr '"C:\Users\Admin\AppData\Roaming\updater.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3156
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC17B.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2120
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4612
- - C:\Users\Admin\AppData\Roaming\updater.exe
    "C:\Users\Admin\AppData\Roaming\updater.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1124
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "updater"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4920
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /delete /f /tn "updater"
        5⤵
        
        PID:1568
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7BB.tmp.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1840
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:2796

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

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
614B

MD5
54920f388010333559bdff225040761d

SHA1
040972bf1fc83014f10c45832322c094f883ce30

SHA256
9ed5449a36700939987209c7a2974b9cc669b8b22c7c4e7936f35dda0a4dc359

SHA512
e17aa5d1328b3bfd3754d15b3c2eded98653d90c7b326f941522e0b3bd6f557880246a6bc69047facb42eb97d2e0ed6c46148dfe95a98669fc4e1d07c21a285c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7BB.tmp.bat

Filesize
155B

MD5
ff605e2b675f9c657f78e094384c6b8b

SHA1
97ffff4b0c3f4ef2ded528758ea9770f14021db1

SHA256
e9f30d8691274f9d05f8495051546dcfad7defceca7b99830c270c9170259157

SHA512
0466cef17fa2098e2d6275a6765f4d4c6daef22eaa775d6b61890058335e8b5accd97dc04566386838ad8efbe2e948e41ddff9cdd3c5efcb71b154cd3c7e20c4

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC17B.tmp.bat

Filesize
151B

MD5
97c94e2a12bfd7632b918ce64e5abfdb

SHA1
9dfd1f773da4d4b8d75bc325564b743a2f78fd66

SHA256
8e20023cad841de1c451c3e2d74ab647c00b78e6c066e308413b14c6017d04e0

SHA512
1a2777752f402537f5f3f288be978e326261b7f473a9e755dda0fa7203e54b83feba85f2fcd11eebaca60b1056c5ada3d63b3b744fb21d462e247a62a9b98016

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

Filesize
58KB

MD5
ee5b9ebce290a31f433d2f0a7c0a68c7

SHA1
bf43d58541c0414d688c32a3e5ad6e26adb61139

SHA256
caf642fb3b0b025f018be00082dfc2c068a57c75fb0f1efa63e04b9ab0f4e654

SHA512
36aa1ca70e064dd78b0722e6510c79d8d5896c2986edd53323d3776d37c46a14a359f2292009218c5e9efb4aef3b4a71198da1298197d5c4509415d32f5a695b

Download Submit
memory/1124-18-0x0000000006230000-0x0000000006294000-memory.dmp

Filesize
400KB

Download
memory/1124-15-0x0000000074520000-0x0000000074CD0000-memory.dmp

Filesize
7.7MB

Download
memory/1124-16-0x0000000005A80000-0x0000000006024000-memory.dmp

Filesize
5.6MB

Download
memory/1124-17-0x00000000062B0000-0x0000000006326000-memory.dmp

Filesize
472KB

Download
memory/1124-19-0x0000000006390000-0x00000000063AE000-memory.dmp

Filesize
120KB

Download
memory/1124-22-0x0000000074520000-0x0000000074CD0000-memory.dmp

Filesize
7.7MB

Download
memory/1712-9-0x00000000745D0000-0x0000000074D80000-memory.dmp

Filesize
7.7MB

Download
memory/1712-4-0x0000000005480000-0x000000000551C000-memory.dmp

Filesize
624KB

Download
memory/1712-3-0x0000000005030000-0x0000000005096000-memory.dmp

Filesize
408KB

Download
memory/1712-2-0x00000000745D0000-0x0000000074D80000-memory.dmp

Filesize
7.7MB

Download
memory/1712-0-0x00000000745DE000-0x00000000745DF000-memory.dmp

Filesize
4KB

Download
memory/1712-1-0x0000000000630000-0x0000000000644000-memory.dmp

Filesize
80KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads