njrat | 21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9

General

Target

21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe
Size

43KB
MD5

d1fb6ce7c73ac96ff29f78bc528e156b
SHA1

b330247292007e08115001a357b8e9d8ae23366b
SHA256

21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9
SHA512

3209c3ce29fc6771b628e819abb645015c79c385b0b11d810028330c044556173cb8914bf1eedb278226bd745ddc7545bad8892f2f2dca0befb3d92dc1a97d4d
SSDEEP

384:LZyexy1STss7yKSVB8YYkEhrpS2dzsIij+ZsNO3PlpJKkkjh/TzF7pWnWygreT0k:ltQk4smKSn8hlrkYuXQ/ofm+L

Score

10^/10

njrat rusjc discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

rusjc

C2

185.79.132.175:8000

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Checks computer location settings 2 TTPs 1 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-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe

Executes dropped EXE 1 IoCs

pid	Process
4020	dllhost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2089655958-977706906-1981639424-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dllhost.exe\" .."	dllhost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3040	21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe
4020	dllhost.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 4020	3040	21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe	93
PID 3040 wrote to memory of 4020	3040	21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe	93
PID 3040 wrote to memory of 4020	3040	21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe	93

C:\Users\Admin\AppData\Local\Temp\21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe
"C:\Users\Admin\AppData\Local\Temp\21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Local\Temp\dllhost.exe
  "C:\Users\Admin\AppData\Local\Temp\dllhost.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:4020

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

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\dllhost.exe

Filesize
43KB

MD5
d1fb6ce7c73ac96ff29f78bc528e156b

SHA1
b330247292007e08115001a357b8e9d8ae23366b

SHA256
21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9

SHA512
3209c3ce29fc6771b628e819abb645015c79c385b0b11d810028330c044556173cb8914bf1eedb278226bd745ddc7545bad8892f2f2dca0befb3d92dc1a97d4d

Download Submit
memory/3040-3-0x00000000060B0000-0x0000000006654000-memory.dmp

Filesize
5.6MB

Download
memory/3040-16-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/3040-0-0x000000007477E000-0x000000007477F000-memory.dmp

Filesize
4KB

Download
memory/3040-4-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/3040-5-0x0000000005C00000-0x0000000005C92000-memory.dmp

Filesize
584KB

Download
memory/3040-1-0x0000000000E30000-0x0000000000E42000-memory.dmp

Filesize
72KB

Download
memory/3040-2-0x0000000005810000-0x00000000058AC000-memory.dmp

Filesize
624KB

Download
memory/4020-15-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/4020-17-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/4020-18-0x0000000005AF0000-0x0000000005AFA000-memory.dmp

Filesize
40KB

Download
memory/4020-19-0x0000000005BF0000-0x0000000005C56000-memory.dmp

Filesize
408KB

Download
memory/4020-20-0x0000000006AE0000-0x0000000006AF8000-memory.dmp

Filesize
96KB

Download
memory/4020-21-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/4020-22-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads