asyncrat | b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9

General

Target

b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe
Size

2.0MB
MD5

1cdf2a762372824d3929991bf7202641
SHA1

acd4fb724ffae7c5d91274b896d603b675acd16b
SHA256

b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9
SHA512

8ae56f16cc52cb12c6bf392ddc54a1170db242ba729a84398734530f4f7bb72e401dcb18153e4427f766c169352cbe64c83a830e1c2662689c6604717a7e02e9
SSDEEP

12288:Rd5xfIau24NrisiwzRe2nxg0v0h4/6SjXP1BWy9sFRJOxh7OmM8zALgR/ryFUvhi:j48sVi6fzl9Nxh7OmM8EH2vgL

Score

10^/10

asyncrat dicembrinos09 discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Dicembrinos09

C2

inicioperiodo06.casacam.net:8854

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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\OrionLegacyCLI = "C:\\Users\\Admin\\Videos\\OrionLegacy\\Bin\\OrionLegacyCLI.exe"	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2348 set thread context of 2084	2348	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	30

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2084	csc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2084	2348	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	30
PID 2348 wrote to memory of 2084	2348	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	30
PID 2348 wrote to memory of 2084	2348	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	30
PID 2348 wrote to memory of 2084	2348	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	30
PID 2348 wrote to memory of 2084	2348	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	30
PID 2348 wrote to memory of 2084	2348	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	30

C:\Users\Admin\AppData\Local\Temp\b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe
"C:\Users\Admin\AppData\Local\Temp\b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2348
- 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:2084

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabD471.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2084-2-0x00000000000C0000-0x00000000000D2000-memory.dmp

Filesize
72KB

Download
memory/2084-4-0x00000000000C0000-0x00000000000D2000-memory.dmp

Filesize
72KB

Download
memory/2084-3-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2084-8-0x00000000000C0000-0x00000000000D2000-memory.dmp

Filesize
72KB

Download
memory/2084-6-0x00000000000C0000-0x00000000000D2000-memory.dmp

Filesize
72KB

Download
memory/2084-9-0x000000007415E000-0x000000007415F000-memory.dmp

Filesize
4KB

Download
memory/2084-10-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2084-27-0x000000007415E000-0x000000007415F000-memory.dmp

Filesize
4KB

Download
memory/2084-28-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2348-0-0x0000000000439000-0x000000000043D000-memory.dmp

Filesize
16KB

Download
memory/2348-1-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads