asyncrat | 788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a

General

Target

788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe
Size

10.0MB
MD5

a0c93f25f5cab7d7843c8a75d8ef2baa
SHA1

d180f3ede64b07da0884a3840ded374bd1594aaa
SHA256

788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a
SHA512

9faf73a13e5e8ed1a31bdc4292f39c3e35313f47e729e054dfb8c8c72035ed53744d8fedba48bfb992986ad021443dcda8f59936079d90695a13fb4ef45484d9
SSDEEP

24576:YaZwmO1/zNeHASYzwkvKeKXLH1wQ2C3ygq2mk6ty:umO1/zcAS0fv02gqW

Score

10^/10

asyncrat bb discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

BB

C2

noviembre07.ydns.eu:2525

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
false
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\ExplrerEnglishLanguage = "C:\\Users\\Admin\\Pictures\\EnglishExplorer\\Bin\\ExplorerEnglish.exe"	788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe

description	pid	Process	procid_target
PID 3020 set thread context of 2332	3020	788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe	31

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.execsc.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

csc.exe

description	pid	Process
Token: SeDebugPrivilege	2332	csc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe

description	pid	Process	procid_target
PID 3020 wrote to memory of 2332	3020	788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe	31
PID 3020 wrote to memory of 2332	3020	788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe	31
PID 3020 wrote to memory of 2332	3020	788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe	31
PID 3020 wrote to memory of 2332	3020	788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe	31
PID 3020 wrote to memory of 2332	3020	788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe	31
PID 3020 wrote to memory of 2332	3020	788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe	31

C:\Users\Admin\AppData\Local\Temp\788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe
"C:\Users\Admin\AppData\Local\Temp\788ed4f6166416af9bda70d6e5064a2d4e2ad0f03cc1a1ee646b41dd8038999a.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabE062.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2332-16-0x00000000000D0000-0x00000000000E2000-memory.dmp

Filesize
72KB

Download
memory/2332-39-0x0000000074230000-0x000000007491E000-memory.dmp

Filesize
6.9MB

Download
memory/2332-38-0x000000007423E000-0x000000007423F000-memory.dmp

Filesize
4KB

Download
memory/2332-20-0x0000000074230000-0x000000007491E000-memory.dmp

Filesize
6.9MB

Download
memory/2332-19-0x000000007423E000-0x000000007423F000-memory.dmp

Filesize
4KB

Download
memory/2332-8-0x00000000000D0000-0x00000000000E2000-memory.dmp

Filesize
72KB

Download
memory/2332-18-0x00000000000D0000-0x00000000000E2000-memory.dmp

Filesize
72KB

Download
memory/2332-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2332-10-0x00000000000D0000-0x00000000000E2000-memory.dmp

Filesize
72KB

Download
memory/3020-3-0x0000000000400000-0x0000000000521000-memory.dmp

Filesize
1.1MB

Download
memory/3020-13-0x0000000000400000-0x0000000000521000-memory.dmp

Filesize
1.1MB

Download
memory/3020-14-0x0000000000400000-0x0000000000521000-memory.dmp

Filesize
1.1MB

Download
memory/3020-7-0x0000000000400000-0x0000000000521000-memory.dmp

Filesize
1.1MB

Download
memory/3020-1-0x0000000000436000-0x000000000044F000-memory.dmp

Filesize
100KB

Download
memory/3020-21-0x0000000000436000-0x000000000044F000-memory.dmp

Filesize
100KB

Download
memory/3020-5-0x0000000000400000-0x0000000000521000-memory.dmp

Filesize
1.1MB

Download
memory/3020-6-0x0000000000400000-0x0000000000521000-memory.dmp

Filesize
1.1MB

Download
memory/3020-0-0x0000000000400000-0x0000000000521000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads