njrat | b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6

General

Target

b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6.exe
Size

23KB
MD5

9db5a2b9971fe8d959bd02fd6d22e522
SHA1

bbe109eae47f18f11dd6f338bfa745a009763b4e
SHA256

b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6
SHA512

d675831dcbd1578bd6a8286ed885ff844896cc0467aa07b226d265f85c9a15ba867969f0666d3c111c0b0e26f2b1485eb9570c41f2320aba37494aac5fbd4717
SSDEEP

384:JoWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZ1j:e7O89p2rRpcnuG

Score

10^/10

njrat new evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

new

C2

174.127.99.136:200

Mutex

23dbefa9b4e28174ecb7bdfd4a7be0f4

Attributes

reg_key
23dbefa9b4e28174ecb7bdfd4a7be0f4
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1504	Explore.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1284	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\23dbefa9b4e28174ecb7bdfd4a7be0f4.exe	Explore.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\23dbefa9b4e28174ecb7bdfd4a7be0f4.exe	Explore.exe

Loads dropped DLL 1 IoCs

pid	Process
960	b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6.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-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\23dbefa9b4e28174ecb7bdfd4a7be0f4 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Explore.exe\" .."	Explore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\23dbefa9b4e28174ecb7bdfd4a7be0f4 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Explore.exe\" .."	Explore.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	1504	Explore.exe
Token: 33	1504	Explore.exe
Token: SeIncBasePriorityPrivilege	1504	Explore.exe
Token: 33	1504	Explore.exe
Token: SeIncBasePriorityPrivilege	1504	Explore.exe
Token: 33	1504	Explore.exe
Token: SeIncBasePriorityPrivilege	1504	Explore.exe
Token: 33	1504	Explore.exe
Token: SeIncBasePriorityPrivilege	1504	Explore.exe
Token: 33	1504	Explore.exe
Token: SeIncBasePriorityPrivilege	1504	Explore.exe
Token: 33	1504	Explore.exe
Token: SeIncBasePriorityPrivilege	1504	Explore.exe
Token: 33	1504	Explore.exe
Token: SeIncBasePriorityPrivilege	1504	Explore.exe
Token: 33	1504	Explore.exe
Token: SeIncBasePriorityPrivilege	1504	Explore.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 960 wrote to memory of 1504	960	b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6.exe	28
PID 960 wrote to memory of 1504	960	b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6.exe	28
PID 960 wrote to memory of 1504	960	b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6.exe	28
PID 960 wrote to memory of 1504	960	b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6.exe	28
PID 1504 wrote to memory of 1284	1504	Explore.exe	29
PID 1504 wrote to memory of 1284	1504	Explore.exe	29
PID 1504 wrote to memory of 1284	1504	Explore.exe	29
PID 1504 wrote to memory of 1284	1504	Explore.exe	29

C:\Users\Admin\AppData\Local\Temp\b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6.exe
"C:\Users\Admin\AppData\Local\Temp\b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:960
- C:\Users\Admin\AppData\Local\Temp\Explore.exe
  "C:\Users\Admin\AppData\Local\Temp\Explore.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1504
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Explore.exe" "Explore.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1284

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
23KB

MD5
9db5a2b9971fe8d959bd02fd6d22e522

SHA1
bbe109eae47f18f11dd6f338bfa745a009763b4e

SHA256
b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6

SHA512
d675831dcbd1578bd6a8286ed885ff844896cc0467aa07b226d265f85c9a15ba867969f0666d3c111c0b0e26f2b1485eb9570c41f2320aba37494aac5fbd4717

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

Filesize
23KB

MD5
9db5a2b9971fe8d959bd02fd6d22e522

SHA1
bbe109eae47f18f11dd6f338bfa745a009763b4e

SHA256
b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6

SHA512
d675831dcbd1578bd6a8286ed885ff844896cc0467aa07b226d265f85c9a15ba867969f0666d3c111c0b0e26f2b1485eb9570c41f2320aba37494aac5fbd4717

Download Submit
\Users\Admin\AppData\Local\Temp\Explore.exe

Filesize
23KB

MD5
9db5a2b9971fe8d959bd02fd6d22e522

SHA1
bbe109eae47f18f11dd6f338bfa745a009763b4e

SHA256
b15046e6f034f055047ad07a4ebde3a83364e5cc936f6823fb4b1b076deb1ae6

SHA512
d675831dcbd1578bd6a8286ed885ff844896cc0467aa07b226d265f85c9a15ba867969f0666d3c111c0b0e26f2b1485eb9570c41f2320aba37494aac5fbd4717

Download Submit
memory/960-54-0x0000000075591000-0x0000000075593000-memory.dmp

Filesize
8KB

Download
memory/960-55-0x0000000074610000-0x0000000074BBB000-memory.dmp

Filesize
5.7MB

Download
memory/960-56-0x0000000074610000-0x0000000074BBB000-memory.dmp

Filesize
5.7MB

Download
memory/960-62-0x0000000074610000-0x0000000074BBB000-memory.dmp

Filesize
5.7MB

Download
memory/1504-63-0x0000000074610000-0x0000000074BBB000-memory.dmp

Filesize
5.7MB

Download
memory/1504-66-0x0000000074610000-0x0000000074BBB000-memory.dmp

Filesize
5.7MB

Download

Analysis

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