asyncrat | 951530a346783029d60acf0aaaf52b5962c5bfed8a92542979335ed574f204f6

Resubmissions

06-05-2024 08:46

240506-kptmkseh8x 10

06-05-2024 08:33

240506-kf4feshe96 10

Analysis

max time kernel
30s
max time network
61s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
06-05-2024 08:46

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General

Target

ameerclient.exe
Size

48KB
MD5

12756d277802542acb80cbbe1d4e0f14
SHA1

bfc7adb73390cc71c57792f9855dd107e2e26e17
SHA256

951530a346783029d60acf0aaaf52b5962c5bfed8a92542979335ed574f204f6
SHA512

126875b1745d65fb7083adfe5a27662ce996ae673e475a0936503653cceccb8c2ae12ed481593074af4131b1deaf1c0475ccde66a51ef794acea8b50cf5c0793
SSDEEP

768:JukTVT0kLd3WULVPdVmo2qDGLfgSYPIUwCa0bwBciUBvYcFnlZ7ZgxErDTBDZIG+:JukTVT0M912FoSdUwUbwBc1fFgxErhdS

Score

10^/10

asyncrat zgrat 1877 rat

Malware Config

Extracted

Family

asyncrat

Version

Xoshnaw

Botnet

1877

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:1877

nerakar.duckdns.org:6606

nerakar.duckdns.org:7707

nerakar.duckdns.org:8808

nerakar.duckdns.org:1877

Mutex

3YeYWvX7BQIk

Attributes

delay
3
install
true
install_file
chroma.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Detect ZGRat V1 1 IoCs

resource	yara_rule
behavioral1/memory/1912-19-0x0000000006B00000-0x0000000006B68000-memory.dmp	family_zgrat_v1

ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x001b00000002aade-12.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1912	chroma.exe

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
4416	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2104	timeout.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe
2052	ameerclient.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2052	ameerclient.exe
Token: SeDebugPrivilege	1912	chroma.exe
Token: SeDebugPrivilege	1912	chroma.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2052 wrote to memory of 2008	2052	ameerclient.exe	81
PID 2052 wrote to memory of 2008	2052	ameerclient.exe	81
PID 2052 wrote to memory of 2008	2052	ameerclient.exe	81
PID 2052 wrote to memory of 4868	2052	ameerclient.exe	83
PID 2052 wrote to memory of 4868	2052	ameerclient.exe	83
PID 2052 wrote to memory of 4868	2052	ameerclient.exe	83
PID 2008 wrote to memory of 4416	2008	cmd.exe	85
PID 2008 wrote to memory of 4416	2008	cmd.exe	85
PID 2008 wrote to memory of 4416	2008	cmd.exe	85
PID 4868 wrote to memory of 2104	4868	cmd.exe	86
PID 4868 wrote to memory of 2104	4868	cmd.exe	86
PID 4868 wrote to memory of 2104	4868	cmd.exe	86
PID 4868 wrote to memory of 1912	4868	cmd.exe	87
PID 4868 wrote to memory of 1912	4868	cmd.exe	87
PID 4868 wrote to memory of 1912	4868	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\ameerclient.exe
"C:\Users\Admin\AppData\Local\Temp\ameerclient.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "chroma" /tr '"C:\Users\Admin\AppData\Roaming\chroma.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2008
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "chroma" /tr '"C:\Users\Admin\AppData\Roaming\chroma.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:4416
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp64D4.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4868
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2104
- - C:\Users\Admin\AppData\Roaming\chroma.exe
    "C:\Users\Admin\AppData\Roaming\chroma.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1912

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp64D4.tmp.bat

Filesize
150B

MD5
f7c6a4d495401a46bc3ec65c07702ecc

SHA1
637c19963a29ac9f20890be3f48a2463a1b9872a

SHA256
f9bc63444d8566fb6d81529331a1a1b426f31584e82b73e43661b910ec6618b7

SHA512
3d03441f7becda9bdc981cc6c63cc48bc4541452c1156653a6557a639ff5d7d450e7cfe1fb06e3ff9b1afc290a1991eeeaa249f2a0cafe61f6565e220c9d9b23

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

Filesize
48KB

MD5
12756d277802542acb80cbbe1d4e0f14

SHA1
bfc7adb73390cc71c57792f9855dd107e2e26e17

SHA256
951530a346783029d60acf0aaaf52b5962c5bfed8a92542979335ed574f204f6

SHA512
126875b1745d65fb7083adfe5a27662ce996ae673e475a0936503653cceccb8c2ae12ed481593074af4131b1deaf1c0475ccde66a51ef794acea8b50cf5c0793

Download Submit
memory/1912-17-0x0000000006410000-0x00000000069B6000-memory.dmp

Filesize
5.6MB

Download
memory/1912-14-0x0000000074980000-0x0000000075131000-memory.dmp

Filesize
7.7MB

Download
memory/1912-18-0x0000000006B80000-0x0000000006BF6000-memory.dmp

Filesize
472KB

Download
memory/1912-19-0x0000000006B00000-0x0000000006B68000-memory.dmp

Filesize
416KB

Download
memory/1912-20-0x0000000006C30000-0x0000000006C4E000-memory.dmp

Filesize
120KB

Download
memory/1912-21-0x0000000006E20000-0x0000000006EB2000-memory.dmp

Filesize
584KB

Download
memory/1912-22-0x0000000074980000-0x0000000075131000-memory.dmp

Filesize
7.7MB

Download
memory/2052-3-0x0000000004B70000-0x0000000004BD6000-memory.dmp

Filesize
408KB

Download
memory/2052-4-0x0000000005000000-0x000000000509C000-memory.dmp

Filesize
624KB

Download
memory/2052-9-0x0000000074A30000-0x00000000751E1000-memory.dmp

Filesize
7.7MB

Download
memory/2052-2-0x0000000074A30000-0x00000000751E1000-memory.dmp

Filesize
7.7MB

Download
memory/2052-1-0x0000000000100000-0x0000000000112000-memory.dmp

Filesize
72KB

Download
memory/2052-0-0x0000000074A3E000-0x0000000074A3F000-memory.dmp

Filesize
4KB

Download