njrat | 45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715

General

Target

45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe
Size

532KB
MD5

0e96867b9627a91f834acad0e7b84e25
SHA1

f9840c3a06ae977817ce14c831afd7c4ba7fabab
SHA256

45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715
SHA512

966c3fb0cf56304d5919c894f5a8745156180fd82648b3241373918242791700cbca10f06d0cea49aaf386628a99f64c89df1db041677dc5134fdde17f29b1bd
SSDEEP

6144:g1vZOZy/rCdul/Iw3Vn9dX8lzEmJDl3roqm+kP7zMv893WfIQZKnFWH+Lfw0sh:PZkrCkl/Z9dA7loqcq08I8KFk/h

Score

10^/10

njrat billy evasion trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

BILLY

C2

withgod.hopper.pw:770

Mutex

b84a37071759ef5cf75837e93f4b857b

Attributes

reg_key
b84a37071759ef5cf75837e93f4b857b
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 2 IoCs

Processes:

1.exe1.exe

pid process

5008 1.exe
1296 1.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1652 netsh.exe

pid	process
5008	1.exe
1296	1.exe

pid	process
1652	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:

45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe

Drops desktop.ini file(s) 2 IoCs

Processes:

45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe

description	ioc	process
File opened for modification	C:\Windows\assembly\Desktop.ini	45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe
File created	C:\Windows\assembly\Desktop.ini	45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

1.exe

description pid process target process

PID 5008 set thread context of 1296 5008 1.exe 1.exe

description	pid	process	target process
PID 5008 set thread context of 1296	5008	1.exe	1.exe

Drops file in Windows directory 3 IoCs

Processes:

45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe

description	ioc	process
File opened for modification	C:\Windows\assembly	45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe
File created	C:\Windows\assembly\Desktop.ini	45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.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 8 IoCs

Processes:

1.exe1.exe

description	pid	process
Token: SeDebugPrivilege	5008	1.exe
Token: SeDebugPrivilege	1296	1.exe
Token: 33	1296	1.exe
Token: SeIncBasePriorityPrivilege	1296	1.exe
Token: 33	1296	1.exe
Token: SeIncBasePriorityPrivilege	1296	1.exe
Token: 33	1296	1.exe
Token: SeIncBasePriorityPrivilege	1296	1.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe1.exe1.exe

description	pid	process	target process
PID 4940 wrote to memory of 5008	4940	45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe	1.exe
PID 4940 wrote to memory of 5008	4940	45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe	1.exe
PID 4940 wrote to memory of 5008	4940	45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe	1.exe
PID 5008 wrote to memory of 1296	5008	1.exe	1.exe
PID 5008 wrote to memory of 1296	5008	1.exe	1.exe
PID 5008 wrote to memory of 1296	5008	1.exe	1.exe
PID 5008 wrote to memory of 1296	5008	1.exe	1.exe
PID 5008 wrote to memory of 1296	5008	1.exe	1.exe
PID 5008 wrote to memory of 1296	5008	1.exe	1.exe
PID 5008 wrote to memory of 1296	5008	1.exe	1.exe
PID 1296 wrote to memory of 1652	1296	1.exe	netsh.exe
PID 1296 wrote to memory of 1652	1296	1.exe	netsh.exe
PID 1296 wrote to memory of 1652	1296	1.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe
"C:\Users\Admin\AppData\Local\Temp\45420f1150a00fc1b74db78200c2d0e593e20a732586de6db59af7ba2a718715.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4940

C:\Users\Admin\AppData\Roaming\mpack\1.exe
"C:\Users\Admin\AppData\Roaming\mpack\1.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5008

C:\Users\Admin\AppData\Roaming\mpack\1.exe
"C:\Users\Admin\AppData\Roaming\mpack\1.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1296

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\mpack\1.exe" "1.exe" ENABLE
4⤵
- Modifies Windows Firewall
PID:1652

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\mpack\1.exe
Filesize
288KB

MD5
d4fa7bd15aecc2749c171f5d97426a41

SHA1
0bda5e4cbe7ecec339d411cc5705800ef2e5f181

SHA256
4a18bd3ea519399cf10546a69f1feb7a3b59f8688f7e6fc3c323e7971fab85f6

SHA512
508f95802c686f08634a56a8dfc97293de57e4aaa68f179d9201ad4b7c167f63a4d76ef07d6e419c90ced7741cb8cc000c780b813a32334d90af3d9cc104186f

Download Submit
C:\Users\Admin\AppData\Roaming\mpack\1.exe
Filesize
288KB

MD5
d4fa7bd15aecc2749c171f5d97426a41

SHA1
0bda5e4cbe7ecec339d411cc5705800ef2e5f181

SHA256
4a18bd3ea519399cf10546a69f1feb7a3b59f8688f7e6fc3c323e7971fab85f6

SHA512
508f95802c686f08634a56a8dfc97293de57e4aaa68f179d9201ad4b7c167f63a4d76ef07d6e419c90ced7741cb8cc000c780b813a32334d90af3d9cc104186f

Download Submit
C:\Users\Admin\AppData\Roaming\mpack\1.exe
Filesize
288KB

MD5
d4fa7bd15aecc2749c171f5d97426a41

SHA1
0bda5e4cbe7ecec339d411cc5705800ef2e5f181

SHA256
4a18bd3ea519399cf10546a69f1feb7a3b59f8688f7e6fc3c323e7971fab85f6

SHA512
508f95802c686f08634a56a8dfc97293de57e4aaa68f179d9201ad4b7c167f63a4d76ef07d6e419c90ced7741cb8cc000c780b813a32334d90af3d9cc104186f

Download Submit
memory/1296-139-0x0000000000000000-mapping.dmp

Download
memory/1296-140-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1296-143-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/1296-145-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/1652-144-0x0000000000000000-mapping.dmp

Download
memory/4940-137-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/4940-132-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/5008-133-0x0000000000000000-mapping.dmp

Download
memory/5008-136-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/5008-138-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/5008-142-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads