njrat | 3ffec8f445ded9f2f5d5675162114213df85dae29bf3bd55aae99423601955d2

General

Target

3ffec8f445ded9f2f5d5675162114213df85dae29bf3bd55aae99423601955d2.exe
Size

170KB
MD5

75d6ce915360568ef5d42f5e40dd4d05
SHA1

22469a08d341541e517eda3eda24b5af343eb991
SHA256

3ffec8f445ded9f2f5d5675162114213df85dae29bf3bd55aae99423601955d2
SHA512

984b1fb8213e451a5ff7b592dcbca418a0c33e043194626e8496a068229a4ba37ddbc3cfe12ef941c727dfa2e09513b343fe74738fa98953d755d75d9b3b4208
SSDEEP

3072:t6j5UoK7BkSPIbbXLOVuY0Bf6PR/wdmnBtYuhYyovyfzWI6P7AAne/YbEZ9u:tDoRwL0Byp/yMvhYyZCP7AAne/YY

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
3848	svchost.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
4172	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	3ffec8f445ded9f2f5d5675162114213df85dae29bf3bd55aae99423601955d2.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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a2b2eed38adf2ef6969163ed40a2f666 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .."	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\a2b2eed38adf2ef6969163ed40a2f666 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .."	svchost.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

description	pid	Process
Token: SeDebugPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe
Token: 33	3848	svchost.exe
Token: SeIncBasePriorityPrivilege	3848	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3488 wrote to memory of 3848	3488	3ffec8f445ded9f2f5d5675162114213df85dae29bf3bd55aae99423601955d2.exe	81
PID 3488 wrote to memory of 3848	3488	3ffec8f445ded9f2f5d5675162114213df85dae29bf3bd55aae99423601955d2.exe	81
PID 3488 wrote to memory of 3848	3488	3ffec8f445ded9f2f5d5675162114213df85dae29bf3bd55aae99423601955d2.exe	81
PID 3848 wrote to memory of 4172	3848	svchost.exe	82
PID 3848 wrote to memory of 4172	3848	svchost.exe	82
PID 3848 wrote to memory of 4172	3848	svchost.exe	82

C:\Users\Admin\AppData\Local\Temp\3ffec8f445ded9f2f5d5675162114213df85dae29bf3bd55aae99423601955d2.exe
"C:\Users\Admin\AppData\Local\Temp\3ffec8f445ded9f2f5d5675162114213df85dae29bf3bd55aae99423601955d2.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3488
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.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\Local\Temp\svchost.exe" "svchost.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4172

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

Loading Replay Monitor...

Downloads

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

Filesize
170KB

MD5
75d6ce915360568ef5d42f5e40dd4d05

SHA1
22469a08d341541e517eda3eda24b5af343eb991

SHA256
3ffec8f445ded9f2f5d5675162114213df85dae29bf3bd55aae99423601955d2

SHA512
984b1fb8213e451a5ff7b592dcbca418a0c33e043194626e8496a068229a4ba37ddbc3cfe12ef941c727dfa2e09513b343fe74738fa98953d755d75d9b3b4208

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

Filesize
170KB

MD5
75d6ce915360568ef5d42f5e40dd4d05

SHA1
22469a08d341541e517eda3eda24b5af343eb991

SHA256
3ffec8f445ded9f2f5d5675162114213df85dae29bf3bd55aae99423601955d2

SHA512
984b1fb8213e451a5ff7b592dcbca418a0c33e043194626e8496a068229a4ba37ddbc3cfe12ef941c727dfa2e09513b343fe74738fa98953d755d75d9b3b4208

Download Submit
memory/3488-132-0x00000000006F0000-0x0000000000720000-memory.dmp

Filesize
192KB

Download
memory/3488-133-0x0000000007870000-0x000000000790C000-memory.dmp

Filesize
624KB

Download
memory/3488-134-0x0000000007EC0000-0x0000000008464000-memory.dmp

Filesize
5.6MB

Download
memory/3848-139-0x0000000007E20000-0x0000000007EB2000-memory.dmp

Filesize
584KB

Download
memory/3848-140-0x0000000007DC0000-0x0000000007DCA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing