njrat | 2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171

General

Target

2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171.exe
Size

304KB
MD5

17a0dc365dc04c4ee188184f8b63e177
SHA1

6d8a16981f57ccdd353967cb27a149569a8989bb
SHA256

2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171
SHA512

42242424d7465379f964afa7c4e1ec21bd48d50093109cd64d4cd79778c9e5bf1ec8fd011a05fe3724c520f2405ed891d2069b554410b58fde4c070de3264900
SSDEEP

3072:x80pZb7yaICOSWlQDDQbVRceTBg80pZb7yaICOSWlQDDQbVRceTBEA:1Zb7yazuUDQbTYZb7yazuUDQbT

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
3068	LocalzsKucvndPx.exe
4656	LocalxU_Rcgakom.exe
2700	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
884	netsh.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	LocalzsKucvndPx.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2ecd600ca72fa4f3038d4da305acefe0 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\2ecd600ca72fa4f3038d4da305acefe0 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeDebugPrivilege	2700	server.exe
Token: 33	2700	server.exe
Token: SeIncBasePriorityPrivilege	2700	server.exe
Token: 33	2700	server.exe
Token: SeIncBasePriorityPrivilege	2700	server.exe
Token: 33	2700	server.exe
Token: SeIncBasePriorityPrivilege	2700	server.exe
Token: 33	2700	server.exe
Token: SeIncBasePriorityPrivilege	2700	server.exe
Token: 33	2700	server.exe
Token: SeIncBasePriorityPrivilege	2700	server.exe
Token: 33	2700	server.exe
Token: SeIncBasePriorityPrivilege	2700	server.exe
Token: 33	2700	server.exe
Token: SeIncBasePriorityPrivilege	2700	server.exe
Token: 33	2700	server.exe
Token: SeIncBasePriorityPrivilege	2700	server.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2620 wrote to memory of 3068	2620	2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171.exe	79
PID 2620 wrote to memory of 3068	2620	2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171.exe	79
PID 2620 wrote to memory of 3068	2620	2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171.exe	79
PID 2620 wrote to memory of 4656	2620	2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171.exe	80
PID 2620 wrote to memory of 4656	2620	2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171.exe	80
PID 2620 wrote to memory of 4656	2620	2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171.exe	80
PID 3068 wrote to memory of 2700	3068	LocalzsKucvndPx.exe	82
PID 3068 wrote to memory of 2700	3068	LocalzsKucvndPx.exe	82
PID 3068 wrote to memory of 2700	3068	LocalzsKucvndPx.exe	82
PID 2700 wrote to memory of 884	2700	server.exe	83
PID 2700 wrote to memory of 884	2700	server.exe	83
PID 2700 wrote to memory of 884	2700	server.exe	83

C:\Users\Admin\AppData\Local\Temp\2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171.exe
"C:\Users\Admin\AppData\Local\Temp\2fc4584295840cc7ef82994f11d10a9de5e669d765c0f09b7efec44869a1a171.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Users\Admin\AppData\LocalzsKucvndPx.exe
  "C:\Users\Admin\AppData\LocalzsKucvndPx.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:3068
- - C:\Users\Admin\AppData\Local\Temp\server.exe
    "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2700
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      PID:884
- C:\Users\Admin\AppData\LocalxU_Rcgakom.exe
  "C:\Users\Admin\AppData\LocalxU_Rcgakom.exe"
  2⤵
  - Executes dropped EXE
  PID:4656

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
144KB

MD5
47c82bc55ecc85daec4323c0ecacd44c

SHA1
c68a779a54cfb4b1cc700321c9bfab5b74391b32

SHA256
39bc90e0ecc05086e30c7e6c1c6e31763782a2b2fc6fb08a5cbe0d44011e05cb

SHA512
29560cf552b4a88ea4dae6203e4cc8e4a05443d546b0440af90aadac1830e44626fd77522001e08f51f5da49af3955e14786e619be2ee24fb1a4c45bb45b9d81

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
144KB

MD5
47c82bc55ecc85daec4323c0ecacd44c

SHA1
c68a779a54cfb4b1cc700321c9bfab5b74391b32

SHA256
39bc90e0ecc05086e30c7e6c1c6e31763782a2b2fc6fb08a5cbe0d44011e05cb

SHA512
29560cf552b4a88ea4dae6203e4cc8e4a05443d546b0440af90aadac1830e44626fd77522001e08f51f5da49af3955e14786e619be2ee24fb1a4c45bb45b9d81

Download Submit
C:\Users\Admin\AppData\LocalxU_Rcgakom.exe

Filesize
144KB

MD5
47c82bc55ecc85daec4323c0ecacd44c

SHA1
c68a779a54cfb4b1cc700321c9bfab5b74391b32

SHA256
39bc90e0ecc05086e30c7e6c1c6e31763782a2b2fc6fb08a5cbe0d44011e05cb

SHA512
29560cf552b4a88ea4dae6203e4cc8e4a05443d546b0440af90aadac1830e44626fd77522001e08f51f5da49af3955e14786e619be2ee24fb1a4c45bb45b9d81

Download Submit
C:\Users\Admin\AppData\LocalxU_Rcgakom.exe

Filesize
144KB

MD5
47c82bc55ecc85daec4323c0ecacd44c

SHA1
c68a779a54cfb4b1cc700321c9bfab5b74391b32

SHA256
39bc90e0ecc05086e30c7e6c1c6e31763782a2b2fc6fb08a5cbe0d44011e05cb

SHA512
29560cf552b4a88ea4dae6203e4cc8e4a05443d546b0440af90aadac1830e44626fd77522001e08f51f5da49af3955e14786e619be2ee24fb1a4c45bb45b9d81

Download Submit
C:\Users\Admin\AppData\LocalzsKucvndPx.exe

Filesize
144KB

MD5
47c82bc55ecc85daec4323c0ecacd44c

SHA1
c68a779a54cfb4b1cc700321c9bfab5b74391b32

SHA256
39bc90e0ecc05086e30c7e6c1c6e31763782a2b2fc6fb08a5cbe0d44011e05cb

SHA512
29560cf552b4a88ea4dae6203e4cc8e4a05443d546b0440af90aadac1830e44626fd77522001e08f51f5da49af3955e14786e619be2ee24fb1a4c45bb45b9d81

Download Submit
C:\Users\Admin\AppData\LocalzsKucvndPx.exe

Filesize
144KB

MD5
47c82bc55ecc85daec4323c0ecacd44c

SHA1
c68a779a54cfb4b1cc700321c9bfab5b74391b32

SHA256
39bc90e0ecc05086e30c7e6c1c6e31763782a2b2fc6fb08a5cbe0d44011e05cb

SHA512
29560cf552b4a88ea4dae6203e4cc8e4a05443d546b0440af90aadac1830e44626fd77522001e08f51f5da49af3955e14786e619be2ee24fb1a4c45bb45b9d81

Download Submit
memory/2620-132-0x00007FFE4D700000-0x00007FFE4E136000-memory.dmp

Filesize
10.2MB

Download
memory/2700-148-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/2700-149-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/3068-142-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/3068-140-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/3068-147-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/4656-141-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/4656-143-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/4656-139-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download

Analysis

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