njrat | 7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23

General

Target

7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23.exe
Size

190KB
MD5

2eb276e7f41a865dfea0f9e3a2a2fae5
SHA1

653bb0ebbb80c78bfac46f2b3c80f8e41bba4a2b
SHA256

7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23
SHA512

98dc29bd8fcf3bee0bf79913cefdf7154d2908053a79c99b076540e46c566db882c1e957e49c84e63436662ab9387efede0e44091fe76001ef728fe9a2ae8c58
SSDEEP

1536:zOmhuiRWuQlPoIA3IWwgmbbdbcpkvYDyUbSO:Kmhp0E+WwgQbdbcpkvlaS

Score

10^/10

njrat khamsat evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

KHAMSAT

C2

rerereka.zapto.org:1177

Mutex

d751b26fa4a030fced29b42979a1cf5b

Attributes

reg_key
d751b26fa4a030fced29b42979a1cf5b
splitter
|'|'|

Signatures

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

Processes:

Dollar.exe

pid process

3716 Dollar.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

260 netsh.exe

pid	process
3716	Dollar.exe

pid	process
260	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:

7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Dollar.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d751b26fa4a030fced29b42979a1cf5b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dollar.exe\" .."	Dollar.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\d751b26fa4a030fced29b42979a1cf5b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dollar.exe\" .."	Dollar.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 19 IoCs

Processes:

Dollar.exe

description	pid	process
Token: SeDebugPrivilege	3716	Dollar.exe
Token: 33	3716	Dollar.exe
Token: SeIncBasePriorityPrivilege	3716	Dollar.exe
Token: 33	3716	Dollar.exe
Token: SeIncBasePriorityPrivilege	3716	Dollar.exe
Token: 33	3716	Dollar.exe
Token: SeIncBasePriorityPrivilege	3716	Dollar.exe
Token: 33	3716	Dollar.exe
Token: SeIncBasePriorityPrivilege	3716	Dollar.exe
Token: 33	3716	Dollar.exe
Token: SeIncBasePriorityPrivilege	3716	Dollar.exe
Token: 33	3716	Dollar.exe
Token: SeIncBasePriorityPrivilege	3716	Dollar.exe
Token: 33	3716	Dollar.exe
Token: SeIncBasePriorityPrivilege	3716	Dollar.exe
Token: 33	3716	Dollar.exe
Token: SeIncBasePriorityPrivilege	3716	Dollar.exe
Token: 33	3716	Dollar.exe
Token: SeIncBasePriorityPrivilege	3716	Dollar.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23.exeDollar.exe

description	pid	process	target process
PID 4268 wrote to memory of 3716	4268	7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23.exe	Dollar.exe
PID 4268 wrote to memory of 3716	4268	7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23.exe	Dollar.exe
PID 4268 wrote to memory of 3716	4268	7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23.exe	Dollar.exe
PID 3716 wrote to memory of 260	3716	Dollar.exe	netsh.exe
PID 3716 wrote to memory of 260	3716	Dollar.exe	netsh.exe
PID 3716 wrote to memory of 260	3716	Dollar.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23.exe
"C:\Users\Admin\AppData\Local\Temp\7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4268

C:\Users\Admin\AppData\Local\Temp\Dollar.exe
"C:\Users\Admin\AppData\Local\Temp\Dollar.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3716

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Dollar.exe" "Dollar.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:260

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\Dollar.exe

Filesize
190KB

MD5
2eb276e7f41a865dfea0f9e3a2a2fae5

SHA1
653bb0ebbb80c78bfac46f2b3c80f8e41bba4a2b

SHA256
7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23

SHA512
98dc29bd8fcf3bee0bf79913cefdf7154d2908053a79c99b076540e46c566db882c1e957e49c84e63436662ab9387efede0e44091fe76001ef728fe9a2ae8c58

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

Filesize
190KB

MD5
2eb276e7f41a865dfea0f9e3a2a2fae5

SHA1
653bb0ebbb80c78bfac46f2b3c80f8e41bba4a2b

SHA256
7dd9f3b22d6e7a0e7b0382411378cc16b47346107d5ee9e0b05444924d6e0b23

SHA512
98dc29bd8fcf3bee0bf79913cefdf7154d2908053a79c99b076540e46c566db882c1e957e49c84e63436662ab9387efede0e44091fe76001ef728fe9a2ae8c58

Download Submit
memory/260-140-0x0000000000000000-mapping.dmp

Download
memory/3716-134-0x0000000000000000-mapping.dmp

Download
memory/3716-137-0x0000000075000000-0x00000000755B1000-memory.dmp

Filesize
5.7MB

Download
memory/3716-139-0x0000000075000000-0x00000000755B1000-memory.dmp

Filesize
5.7MB

Download
memory/4268-132-0x0000000075000000-0x00000000755B1000-memory.dmp

Filesize
5.7MB

Download
memory/4268-133-0x0000000075000000-0x00000000755B1000-memory.dmp

Filesize
5.7MB

Download
memory/4268-138-0x0000000075000000-0x00000000755B1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads