asyncrat | 5b832740ae1f2a5c2c10e37aadd6d0b74d647a9ff853f091a2262ef0ae2c672c

Analysis

max time kernel
146s
max time network
129s
platform
windows7_x64
resource
win7v200722
submitted
18/10/2020, 10:55

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General

Target
a077d5b666cb684165c3a0783c3a1071.exe
Size 214KB
Sample201018-jgz32ghbcj
SHA256 5b832740ae1f2a5c2c10e37aadd6d0b74d647a9ff853f091a2262ef0ae2c672c
MD5 a077d5b666cb684165c3a0783c3a1071
SHA1 f3f090301d2f66491b26ab61dac63fb5ae6dddf5
SHA512 1df0df942ba55c2310609a7150681f040d1bad368510ac06bebdf50771b19d8b1b47388c405d229e0fed97ccdb9d3106a66eef515ba0752f42e48f34dc7546d9
MD5 SHA1 SHA512

Score

10^/10

rat asyncrat persistence

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

agentttt.ac.ug,agentpurple.ac.ug:6970

Mutex

AsyncMutex_6SI8OkPnk

Attributes

aes_key
16dw6EDbQkYZp5BTs7cmLUicVtOA4UQr
anti_detection
false
autorun
false
bdos
false
delay
Default
host
agentttt.ac.ug,agentpurple.ac.ug
hwid
3
install_file
install_folder
%AppData%
mutex
AsyncMutex_6SI8OkPnk
pastebin_config
null
port
6970
version
0.5.7B

aes.plain

Signatures

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

Async RAT payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/1584-6-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1584-7-0x000000000040C76E-mapping.dmp	asyncrat
behavioral1/memory/1584-8-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1584-9-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-403932158-3302036622-1224131197-1000\Software\Microsoft\Windows\CurrentVersion\Run\dcvlc = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\VideoLAN\\dcvlc.exe\""	a077d5b666cb684165c3a0783c3a1071.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1064 set thread context of 1584	1064	a077d5b666cb684165c3a0783c3a1071.exe	30

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1604	Powershell.exe
1604	Powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1064	a077d5b666cb684165c3a0783c3a1071.exe
Token: SeDebugPrivilege	1604	Powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1064 wrote to memory of 1604	1064	a077d5b666cb684165c3a0783c3a1071.exe	28
PID 1064 wrote to memory of 1604	1064	a077d5b666cb684165c3a0783c3a1071.exe	28
PID 1064 wrote to memory of 1604	1064	a077d5b666cb684165c3a0783c3a1071.exe	28
PID 1064 wrote to memory of 1604	1064	a077d5b666cb684165c3a0783c3a1071.exe	28
PID 1064 wrote to memory of 1584	1064	a077d5b666cb684165c3a0783c3a1071.exe	30
PID 1064 wrote to memory of 1584	1064	a077d5b666cb684165c3a0783c3a1071.exe	30
PID 1064 wrote to memory of 1584	1064	a077d5b666cb684165c3a0783c3a1071.exe	30
PID 1064 wrote to memory of 1584	1064	a077d5b666cb684165c3a0783c3a1071.exe	30
PID 1064 wrote to memory of 1584	1064	a077d5b666cb684165c3a0783c3a1071.exe	30
PID 1064 wrote to memory of 1584	1064	a077d5b666cb684165c3a0783c3a1071.exe	30
PID 1064 wrote to memory of 1584	1064	a077d5b666cb684165c3a0783c3a1071.exe	30
PID 1064 wrote to memory of 1584	1064	a077d5b666cb684165c3a0783c3a1071.exe	30
PID 1064 wrote to memory of 1584	1064	a077d5b666cb684165c3a0783c3a1071.exe	30

C:\Users\Admin\AppData\Local\Temp\a077d5b666cb684165c3a0783c3a1071.exe
"C:\Users\Admin\AppData\Local\Temp\a077d5b666cb684165c3a0783c3a1071.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell" Add-MpPreference -ExclusionPath '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\VideoLAN\dcvlc.exe"'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1604
- C:\Users\Admin\AppData\Local\Temp\a077d5b666cb684165c3a0783c3a1071.exe
  "C:\Users\Admin\AppData\Local\Temp\a077d5b666cb684165c3a0783c3a1071.exe"
  2⤵
  PID:1584

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1064-1-0x0000000000A10000-0x0000000000A11000-memory.dmp

Download

memory/1064-3-0x0000000000350000-0x000000000036A000-memory.dmp

Download

memory/1064-0-0x0000000074BF0000-0x00000000752DE000-memory.dmp

Download

memory/1064-5-0x0000000000370000-0x000000000037C000-memory.dmp

Download

memory/1584-10-0x0000000074BF0000-0x00000000752DE000-memory.dmp

Download

memory/1584-6-0x0000000000400000-0x0000000000412000-memory.dmp

Download

memory/1584-8-0x0000000000400000-0x0000000000412000-memory.dmp

Download

memory/1584-9-0x0000000000400000-0x0000000000412000-memory.dmp

Download

memory/1604-13-0x0000000074BF0000-0x00000000752DE000-memory.dmp

Download

memory/1604-14-0x0000000000920000-0x0000000000921000-memory.dmp

Download

memory/1604-15-0x0000000004850000-0x0000000004851000-memory.dmp

Download

memory/1604-16-0x0000000000E10000-0x0000000000E11000-memory.dmp

Download

memory/1604-17-0x0000000001310000-0x0000000001311000-memory.dmp

Download

memory/1604-20-0x0000000005610000-0x0000000005611000-memory.dmp

Download

memory/1604-25-0x0000000006040000-0x0000000006041000-memory.dmp

Download

memory/1604-26-0x00000000061D0000-0x00000000061D1000-memory.dmp

Download

memory/1604-33-0x0000000006170000-0x0000000006171000-memory.dmp

Download

memory/1604-34-0x00000000055D0000-0x00000000055D1000-memory.dmp

Download

memory/1604-48-0x0000000006300000-0x0000000006301000-memory.dmp

Download

memory/1604-49-0x0000000006310000-0x0000000006311000-memory.dmp

Download