asyncrat | b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b

General

Target

b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe
Size

1.1MB
MD5

27f646f3b6591f9f7df3fa65d0b2e2f3
SHA1

92d089ea1704882148c68447c94a4cc76760d8cb
SHA256

b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b
SHA512

54279545b48e98dd37f1fcb960ccc00fc4e1a41947da49d34ee63b7ff1a834b55169419c4e4c0a29295bf40e92df2cc55037053bfbe7553978caac932d118101
SSDEEP

24576:waZwl60+T/zNewASB8qKX2nyoIDQ2PPTcONWpDey7iI6AWlhA+D2OWygEFA+iL2+:WaT/zvAStyoIDQ2PPTcONWpDey7iIXWA

Score

10^/10

asyncrat njrat default lime nov19 discovery persistence rat trojan

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

NOV19

C2

notificacionpdf.duckdns.org:8010

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

Default

C2

oooptesg.duckdns.org:8020

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Extracted

Family

njrat

Version

0.7.3

Botnet

Lime

C2

gfhgfjfrur.duckdns.org:8031

Mutex

Client.exe

Attributes

reg_key
Client.exe
splitter
1234

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat
Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ExplrerEnglishLanguage = "C:\\Users\\Admin\\Pictures\\EnglishExplorer\\Bin\\ExplorerEnglish.exe"	b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.execsc.exe

description	pid	Process	procid_target
PID 3940 set thread context of 4980	3940	b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe	91
PID 4980 set thread context of 4464	4980	csc.exe	100
PID 4980 set thread context of 5028	4980	csc.exe	102

System Location Discovery: System Language Discovery 1 TTPs 4 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:

b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.execsc.exeRegSvcs.exeRegSvcs.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

csc.exeRegSvcs.exeRegSvcs.exe

description	pid	Process
Token: SeDebugPrivilege	4980	csc.exe
Token: SeDebugPrivilege	4464	RegSvcs.exe
Token: SeDebugPrivilege	5028	RegSvcs.exe
Token: 33	5028	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	5028	RegSvcs.exe
Token: 33	5028	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	5028	RegSvcs.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.execsc.exe

description	pid	Process	procid_target
PID 3940 wrote to memory of 4980	3940	b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe	91
PID 3940 wrote to memory of 4980	3940	b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe	91
PID 3940 wrote to memory of 4980	3940	b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe	91
PID 3940 wrote to memory of 4980	3940	b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe	91
PID 3940 wrote to memory of 4980	3940	b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe	91
PID 4980 wrote to memory of 4464	4980	csc.exe	100
PID 4980 wrote to memory of 4464	4980	csc.exe	100
PID 4980 wrote to memory of 4464	4980	csc.exe	100
PID 4980 wrote to memory of 4464	4980	csc.exe	100
PID 4980 wrote to memory of 4464	4980	csc.exe	100
PID 4980 wrote to memory of 4464	4980	csc.exe	100
PID 4980 wrote to memory of 4464	4980	csc.exe	100
PID 4980 wrote to memory of 4464	4980	csc.exe	100
PID 4980 wrote to memory of 5028	4980	csc.exe	102
PID 4980 wrote to memory of 5028	4980	csc.exe	102
PID 4980 wrote to memory of 5028	4980	csc.exe	102
PID 4980 wrote to memory of 5028	4980	csc.exe	102
PID 4980 wrote to memory of 5028	4980	csc.exe	102
PID 4980 wrote to memory of 5028	4980	csc.exe	102
PID 4980 wrote to memory of 5028	4980	csc.exe	102
PID 4980 wrote to memory of 5028	4980	csc.exe	102

C:\Users\Admin\AppData\Local\Temp\b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe
"C:\Users\Admin\AppData\Local\Temp\b61d9cae70fcb7e27d7a95718dbf0bd8f2d8794d9e35adfeb6d6a61305561c6b.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3940
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4980
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4464
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:5028

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

memory/3940-9-0x0000000000400000-0x0000000000520000-memory.dmp

Filesize
1.1MB

Download
memory/3940-1-0x0000000000436000-0x000000000044F000-memory.dmp

Filesize
100KB

Download
memory/3940-4-0x0000000000400000-0x0000000000520000-memory.dmp

Filesize
1.1MB

Download
memory/3940-6-0x0000000000400000-0x0000000000520000-memory.dmp

Filesize
1.1MB

Download
memory/3940-3-0x0000000000400000-0x0000000000520000-memory.dmp

Filesize
1.1MB

Download
memory/3940-12-0x0000000000436000-0x000000000044F000-memory.dmp

Filesize
100KB

Download
memory/3940-5-0x0000000000400000-0x0000000000520000-memory.dmp

Filesize
1.1MB

Download
memory/3940-8-0x0000000000400000-0x0000000000520000-memory.dmp

Filesize
1.1MB

Download
memory/3940-0-0x0000000000400000-0x0000000000520000-memory.dmp

Filesize
1.1MB

Download
memory/4464-28-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/4464-27-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/4464-29-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/4464-26-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/4464-25-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4980-17-0x0000000005DD0000-0x0000000005E36000-memory.dmp

Filesize
408KB

Download
memory/4980-24-0x0000000007350000-0x000000000736E000-memory.dmp

Filesize
120KB

Download
memory/4980-19-0x00000000748FE000-0x00000000748FF000-memory.dmp

Filesize
4KB

Download
memory/4980-20-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/4980-21-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/4980-22-0x00000000073B0000-0x0000000007426000-memory.dmp

Filesize
472KB

Download
memory/4980-23-0x0000000006070000-0x000000000607E000-memory.dmp

Filesize
56KB

Download
memory/4980-18-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/4980-16-0x0000000006380000-0x0000000006924000-memory.dmp

Filesize
5.6MB

Download
memory/4980-15-0x0000000005D30000-0x0000000005DCC000-memory.dmp

Filesize
624KB

Download
memory/4980-11-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/4980-10-0x00000000748FE000-0x00000000748FF000-memory.dmp

Filesize
4KB

Download
memory/4980-7-0x0000000000A70000-0x0000000000A82000-memory.dmp

Filesize
72KB

Download
memory/5028-30-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/5028-31-0x0000000005760000-0x00000000057F2000-memory.dmp

Filesize
584KB

Download
memory/5028-32-0x0000000005810000-0x000000000581A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads