njrat | d261f3a5a6b1dbedde2e566d010b71ce3bdb9162942945f8f701b6a3dffbc136

General

Target

0335549dd5d1118a7f7d5f27cb3580df.exe
Size

23KB
MD5

0335549dd5d1118a7f7d5f27cb3580df
SHA1

e7e04abff7b927035413384fec50f96fd5c4bf13
SHA256

d261f3a5a6b1dbedde2e566d010b71ce3bdb9162942945f8f701b6a3dffbc136
SHA512

a62cac6e2eb2d6e2f5b88c92bd0692cd12b49f604ccdca885a557426ff1fde13112c6fd5997421d0023063918f42f8d6e760af3085bc7dc5fa7734bef61348ca

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

spk.accesscam.org:55554

Mutex

8b74397fe4c6a2e2f2b0ca227328ea9d

Attributes

reg_key
8b74397fe4c6a2e2f2b0ca227328ea9d
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 1 IoCs

Processes:

GyfSg.exe

pid process

3848 GyfSg.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

2324 netsh.exe

pid	process
3848	GyfSg.exe

pid	process
2324	netsh.exe

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

Processes:

0335549dd5d1118a7f7d5f27cb3580df.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2783062828-828903012-4218294845-1000\Control Panel\International\Geo\Nation	0335549dd5d1118a7f7d5f27cb3580df.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

GyfSg.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\8b74397fe4c6a2e2f2b0ca227328ea9d = "\"C:\\Users\\Admin\\AppData\\Roaming\\GyfSg.exe\" .."	GyfSg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2783062828-828903012-4218294845-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\8b74397fe4c6a2e2f2b0ca227328ea9d = "\"C:\\Users\\Admin\\AppData\\Roaming\\GyfSg.exe\" .."	GyfSg.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 33 IoCs

Processes:

GyfSg.exe

description	pid	process
Token: SeDebugPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe
Token: 33	3848	GyfSg.exe
Token: SeIncBasePriorityPrivilege	3848	GyfSg.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

0335549dd5d1118a7f7d5f27cb3580df.exeGyfSg.exe

description	pid	process	target process
PID 920 wrote to memory of 3848	920	0335549dd5d1118a7f7d5f27cb3580df.exe	GyfSg.exe
PID 920 wrote to memory of 3848	920	0335549dd5d1118a7f7d5f27cb3580df.exe	GyfSg.exe
PID 920 wrote to memory of 3848	920	0335549dd5d1118a7f7d5f27cb3580df.exe	GyfSg.exe
PID 3848 wrote to memory of 2324	3848	GyfSg.exe	netsh.exe
PID 3848 wrote to memory of 2324	3848	GyfSg.exe	netsh.exe
PID 3848 wrote to memory of 2324	3848	GyfSg.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\0335549dd5d1118a7f7d5f27cb3580df.exe
"C:\Users\Admin\AppData\Local\Temp\0335549dd5d1118a7f7d5f27cb3580df.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:920
- C:\Users\Admin\AppData\Roaming\GyfSg.exe
  "C:\Users\Admin\AppData\Roaming\GyfSg.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3848
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\GyfSg.exe" "GyfSg.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2324

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\Roaming\GyfSg.exe

Filesize
23KB

MD5
0335549dd5d1118a7f7d5f27cb3580df

SHA1
e7e04abff7b927035413384fec50f96fd5c4bf13

SHA256
d261f3a5a6b1dbedde2e566d010b71ce3bdb9162942945f8f701b6a3dffbc136

SHA512
a62cac6e2eb2d6e2f5b88c92bd0692cd12b49f604ccdca885a557426ff1fde13112c6fd5997421d0023063918f42f8d6e760af3085bc7dc5fa7734bef61348ca

Download Submit
C:\Users\Admin\AppData\Roaming\GyfSg.exe

Filesize
23KB

MD5
0335549dd5d1118a7f7d5f27cb3580df

SHA1
e7e04abff7b927035413384fec50f96fd5c4bf13

SHA256
d261f3a5a6b1dbedde2e566d010b71ce3bdb9162942945f8f701b6a3dffbc136

SHA512
a62cac6e2eb2d6e2f5b88c92bd0692cd12b49f604ccdca885a557426ff1fde13112c6fd5997421d0023063918f42f8d6e760af3085bc7dc5fa7734bef61348ca

Download Submit
memory/920-130-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/920-134-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/2324-136-0x0000000000000000-mapping.dmp

Download
memory/3848-131-0x0000000000000000-mapping.dmp

Download
memory/3848-135-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download
memory/3848-137-0x00000000747A0000-0x0000000074D51000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads