asyncrat | 172705adb5ebbb023174bafa12a8c572604258aaf4a3959ec6759c7e3333b7ec

General

Target

de96f95692e27176b74125a40300ba08.exe
Size

1.9MB
MD5

de96f95692e27176b74125a40300ba08
SHA1

472c7dfb79b00e95b68b3ba23c7fb5c14c740053
SHA256

172705adb5ebbb023174bafa12a8c572604258aaf4a3959ec6759c7e3333b7ec
SHA512

9062560007de212f285c1fee05df3b6cd021fcc4367d29b1baf9b0a1158aca484601a57b84e7c4b9c0937336f7a3e6e69fd990f516abd288666edf6aca16e1cc
SSDEEP

24576:sYYiCmMxAtOsBgo0q4wMcCcsp/iKgM4MRM/mXVK67k3GCo27nsISxZvBn2spMBuu:sVWsoHMcCbppx44lK13NAI6736F6Z

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

podzeye.duckdns.org:4422

podzeye.duckdns.org:4442

podzeye.duckdns.org:4433

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 written in C#.
rat asyncrat

CustAttr .NET packer 1 IoCs

Detects CustAttr .NET packer in memory.

resource	yara_rule
behavioral2/memory/4508-8-0x0000000002770000-0x0000000002782000-memory.dmp	CustAttr

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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	de96f95692e27176b74125a40300ba08.exe
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	System.exe

Executes dropped EXE 2 IoCs

pid	Process
2956	System.exe
4856	System.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4508 set thread context of 4828	4508	de96f95692e27176b74125a40300ba08.exe	104
PID 2956 set thread context of 4856	2956	System.exe	115

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
408	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2956	System.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2956	System.exe
Token: SeDebugPrivilege	4856	System.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4828	de96f95692e27176b74125a40300ba08.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4508 wrote to memory of 4828	4508	de96f95692e27176b74125a40300ba08.exe	104
PID 4508 wrote to memory of 4828	4508	de96f95692e27176b74125a40300ba08.exe	104
PID 4508 wrote to memory of 4828	4508	de96f95692e27176b74125a40300ba08.exe	104
PID 4508 wrote to memory of 4828	4508	de96f95692e27176b74125a40300ba08.exe	104
PID 4508 wrote to memory of 4828	4508	de96f95692e27176b74125a40300ba08.exe	104
PID 4508 wrote to memory of 4828	4508	de96f95692e27176b74125a40300ba08.exe	104
PID 4508 wrote to memory of 4828	4508	de96f95692e27176b74125a40300ba08.exe	104
PID 4828 wrote to memory of 2956	4828	de96f95692e27176b74125a40300ba08.exe	105
PID 4828 wrote to memory of 2956	4828	de96f95692e27176b74125a40300ba08.exe	105
PID 4828 wrote to memory of 2956	4828	de96f95692e27176b74125a40300ba08.exe	105
PID 2956 wrote to memory of 408	2956	System.exe	113
PID 2956 wrote to memory of 408	2956	System.exe	113
PID 2956 wrote to memory of 408	2956	System.exe	113
PID 2956 wrote to memory of 4856	2956	System.exe	115
PID 2956 wrote to memory of 4856	2956	System.exe	115
PID 2956 wrote to memory of 4856	2956	System.exe	115
PID 2956 wrote to memory of 4856	2956	System.exe	115
PID 2956 wrote to memory of 4856	2956	System.exe	115
PID 2956 wrote to memory of 4856	2956	System.exe	115
PID 2956 wrote to memory of 4856	2956	System.exe	115
PID 2956 wrote to memory of 4856	2956	System.exe	115

C:\Users\Admin\AppData\Local\Temp\de96f95692e27176b74125a40300ba08.exe
"C:\Users\Admin\AppData\Local\Temp\de96f95692e27176b74125a40300ba08.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Users\Admin\AppData\Local\Temp\de96f95692e27176b74125a40300ba08.exe
  "C:\Users\Admin\AppData\Local\Temp\de96f95692e27176b74125a40300ba08.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4828
- - C:\Users\Admin\AppData\Local\Temp\System.exe
    "C:\Users\Admin\AppData\Local\Temp\System.exe" 0
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2956
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ToahHiZtj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEC7E.tmp"
      4⤵
      Creates scheduled task(s)
      PID:408
  - - C:\Users\Admin\AppData\Local\Temp\System.exe
      "C:\Users\Admin\AppData\Local\Temp\System.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:4856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
1KB

MD5
17573558c4e714f606f997e5157afaac

SHA1
13e16e9415ceef429aaf124139671ebeca09ed23

SHA256
c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

SHA512
f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\System.exe

Filesize
1.1MB

MD5
6de6f3b1c646ed699f7e31c0631d0032

SHA1
e658e0ddf1d4d5cfbf3a73635ac96682bcfac6cb

SHA256
eb054bd6d1a8270815b7aba891b45fad52593e1eb99dfb5052dadb61587e9c45

SHA512
21eaa83a95ed1a4902ad06fe450a2fc745c5ebcb7816a9dd4690112910c83130b54a3632aa88ac498055ea33275e3df7373658053c0fbf5290ea3493273c566d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEC7E.tmp

Filesize
1KB

MD5
0e0f8cf5cfaeb08a9fe4aaacb01be066

SHA1
f005218824f0de9247186df7b6840a04b1d59c61

SHA256
55437b302d0a1f34d1c3423558ba563763a79f8bd7f37d1f9e074b48a95a3f13

SHA512
58c72919767211a6b3695ccd7db02cfb10774f61dd23dbbf8063d3d07bef0658cecf51159c756461c8d8551a5a7d316378327c7fec2438b2700e504e6476601d

Download Submit
memory/2956-38-0x0000000005A60000-0x0000000005A72000-memory.dmp

Filesize
72KB

Download
memory/2956-33-0x0000000000E60000-0x0000000000F74000-memory.dmp

Filesize
1.1MB

Download
memory/2956-49-0x0000000073FE0000-0x0000000074790000-memory.dmp

Filesize
7.7MB

Download
memory/2956-32-0x0000000073FE0000-0x0000000074790000-memory.dmp

Filesize
7.7MB

Download
memory/2956-36-0x0000000005A70000-0x0000000005A80000-memory.dmp

Filesize
64KB

Download
memory/2956-35-0x0000000073FE0000-0x0000000074790000-memory.dmp

Filesize
7.7MB

Download
memory/2956-34-0x0000000005A70000-0x0000000005A80000-memory.dmp

Filesize
64KB

Download
memory/2956-37-0x0000000006F20000-0x0000000006F7A000-memory.dmp

Filesize
360KB

Download
memory/4508-10-0x0000000005230000-0x0000000005240000-memory.dmp

Filesize
64KB

Download
memory/4508-4-0x0000000005000000-0x0000000005092000-memory.dmp

Filesize
584KB

Download
memory/4508-5-0x0000000005230000-0x0000000005240000-memory.dmp

Filesize
64KB

Download
memory/4508-1-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/4508-18-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/4508-3-0x0000000005510000-0x0000000005AB4000-memory.dmp

Filesize
5.6MB

Download
memory/4508-7-0x00000000052A0000-0x00000000052F6000-memory.dmp

Filesize
344KB

Download
memory/4508-8-0x0000000002770000-0x0000000002782000-memory.dmp

Filesize
72KB

Download
memory/4508-2-0x0000000004EB0000-0x0000000004F4C000-memory.dmp

Filesize
624KB

Download
memory/4508-6-0x0000000004FA0000-0x0000000004FAA000-memory.dmp

Filesize
40KB

Download
memory/4508-12-0x0000000006E00000-0x0000000006F1A000-memory.dmp

Filesize
1.1MB

Download
memory/4508-9-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/4508-11-0x0000000006C80000-0x0000000006DB2000-memory.dmp

Filesize
1.2MB

Download
memory/4508-0-0x0000000000320000-0x0000000000510000-memory.dmp

Filesize
1.9MB

Download
memory/4828-31-0x0000000000400000-0x0000000000513000-memory.dmp

Filesize
1.1MB

Download
memory/4828-16-0x0000000000400000-0x0000000000513000-memory.dmp

Filesize
1.1MB

Download
memory/4828-13-0x0000000000400000-0x0000000000513000-memory.dmp

Filesize
1.1MB

Download
memory/4856-44-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4856-48-0x0000000073FE0000-0x0000000074790000-memory.dmp

Filesize
7.7MB

Download
memory/4856-50-0x0000000002A10000-0x0000000002A20000-memory.dmp

Filesize
64KB

Download
memory/4856-51-0x0000000073FE0000-0x0000000074790000-memory.dmp

Filesize
7.7MB

Download
memory/4856-52-0x0000000002A10000-0x0000000002A20000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads