asyncrat | 40c89ba2c4705e0bc78906c2c67a216ce2c8f35db71f9266bb22f951916f9f1c

Analysis

max time kernel
18s
max time network
154s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19-07-2024 21:31

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General

Target

simas.exe
Size

633.6MB
MD5

50d8f8e2fffcb5d00f53c2e2bced7264
SHA1

2bbabd5d67e2eee8c129e1c686ffb26cc02bd7a9
SHA256

f3c6e0e66df7c335f28b0db0a15c8e77986a1d0a57ffda99b787a6aaa03b8041
SHA512

f483464810fafc54c7c9630be92e8e830fe082e6a32ff4ffd27bb00c8fa39ce508c5f8e4aa2a69fc6995223d43206dc0386091050c0916a24a342bccd3fc0eb9
SSDEEP

98304:5mJVD97VAOltrWJP8SDUTYAA56RoeXN3cJvPd4Fm0fA0:5mJ7hAatrWJP8S+YAfSkN+vPjt0

Score

10^/10

asyncrat enviojulio persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

ENVIOJULIO

hiperconection.duckdns.org:3030

Mutex

PRMBSRGT0kqWhLMuk3qtRg

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\tiopLottt = "C:\\Users\\Admin\\Documents\\unaReversa\\simas.exe"	simas.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 332 set thread context of 2548	332	simas.exe	30

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2548	csc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 332 wrote to memory of 2548	332	simas.exe	30
PID 332 wrote to memory of 2548	332	simas.exe	30
PID 332 wrote to memory of 2548	332	simas.exe	30
PID 332 wrote to memory of 2548	332	simas.exe	30
PID 332 wrote to memory of 2548	332	simas.exe	30
PID 332 wrote to memory of 2548	332	simas.exe	30

C:\Users\Admin\AppData\Local\Temp\simas.exe
"C:\Users\Admin\AppData\Local\Temp\simas.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:332
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabF346.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/332-0-0x0000000000400000-0x0000000000846000-memory.dmp

Filesize
4.3MB

Download
memory/332-1-0x0000000000400000-0x0000000000846000-memory.dmp

Filesize
4.3MB

Download
memory/332-2-0x000000000043A000-0x0000000000453000-memory.dmp

Filesize
100KB

Download
memory/332-3-0x0000000000400000-0x0000000000846000-memory.dmp

Filesize
4.3MB

Download
memory/332-12-0x0000000000400000-0x0000000000846000-memory.dmp

Filesize
4.3MB

Download
memory/2548-5-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2548-4-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2548-6-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2548-11-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2548-9-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2548-13-0x0000000000230000-0x0000000000444000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads