njrat | a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
20-03-2022 03:34

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General

Target

a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff.exe
Size

3.2MB
MD5

562a9f62a55034e9c8aa9bbfa9850b16
SHA1

3b23806194ebfd8ba2215a0f11d9b0199791fe80
SHA256

a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff
SHA512

896b605c64f97323402cf45d2f0f505fd518344b9e96971a3b46d8ab972d7b8fbc48ac6d02d3c2e29da0311f37f97181eb1b6b2e79a3036d4ff02d22f4b86ce6

Score

10^/10

njrat hacker persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

hacker

2.tcp.ngrok.io:17639

Mutex

7cf40e6a3924b89f8051713ab507eec7

Attributes

reg_key
7cf40e6a3924b89f8051713ab507eec7
splitter
|'|'|

Signatures

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

Processes:

CDS.execrypted.exe

pid process

3900 CDS.exe
4836 crypted.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:

CDS.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation CDS.exe
Loads dropped DLL 1 IoCs

Processes:

CDS.exe

pid process

3900 CDS.exe

pid	process
3900	CDS.exe
4836	crypted.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	CDS.exe

pid	process
3900	CDS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce	a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

CDS.exe

pid process

3900 CDS.exe
3900 CDS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

AUDIODG.EXE

description pid process

Token: 33 4376 AUDIODG.EXE
Token: SeIncBasePriorityPrivilege 4376 AUDIODG.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

CDS.exe

pid process

3900 CDS.exe
3900 CDS.exe

pid	process
3900	CDS.exe
3900	CDS.exe

description	pid	process
Token: 33	4376	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	4376	AUDIODG.EXE

pid	process
3900	CDS.exe
3900	CDS.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff.exeCDS.execrypted.exefondue.exe

description	pid	process	target process
PID 2032 wrote to memory of 3900	2032	a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff.exe	CDS.exe
PID 2032 wrote to memory of 3900	2032	a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff.exe	CDS.exe
PID 2032 wrote to memory of 3900	2032	a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff.exe	CDS.exe
PID 3900 wrote to memory of 4836	3900	CDS.exe	crypted.exe
PID 3900 wrote to memory of 4836	3900	CDS.exe	crypted.exe
PID 3900 wrote to memory of 4836	3900	CDS.exe	crypted.exe
PID 4836 wrote to memory of 2468	4836	crypted.exe	fondue.exe
PID 4836 wrote to memory of 2468	4836	crypted.exe	fondue.exe
PID 4836 wrote to memory of 2468	4836	crypted.exe	fondue.exe
PID 2468 wrote to memory of 3616	2468	fondue.exe	FonDUE.EXE
PID 2468 wrote to memory of 3616	2468	fondue.exe	FonDUE.EXE

C:\Users\Admin\AppData\Local\Temp\a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff.exe
"C:\Users\Admin\AppData\Local\Temp\a0fb965b1d048e325d3fd08bdd6ea4106758052c5d63ad7f36e319f868782fff.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2032

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\CDS.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\CDS.exe
2⤵
- Executes dropped EXE
- Checks computer location settings
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3900

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\crypted.exe
"C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\crypted.exe"
3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4836

C:\Windows\SysWOW64\fondue.exe
"C:\Windows\system32\fondue.exe" /enable-feature:NetFx3 /caller-name:mscoreei.dll
4⤵
- Suspicious use of WriteProcessMemory
PID:2468

C:\Windows\system32\FonDUE.EXE
"C:\Windows\sysnative\FonDUE.EXE" /enable-feature:NetFx3 /caller-name:mscoreei.dll
5⤵
PID:3616

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x2f4 0x2ec
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4376

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\630_10.png
MD5
340b294efc691d1b20c64175d565ebc7

SHA1
81cb9649bd1c9a62ae79e781818fc24d15c29ce7

SHA256
72566894059452101ea836bbff9ede5069141eeb52022ab55baa24e1666825c9

SHA512
1395a8e175c63a1a1ff459a9dac437156c74299272e020e7e078a087969251a8534f17244a529acbc1b6800a97d4c0abfa3c88f6fcb88423f56dfaae9b49fc3d

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\CDS.cdd
MD5
3e7ecaeb51c2812d13b07ec852d74aaf

SHA1
e9bdab93596ffb0f7f8c65243c579180939acb26

SHA256
e7e942993864e8b18780ef10a415f7b93924c6378248c52f0c96895735222b96

SHA512
635cd5173b595f1905af9eeea65037601cf8496d519c506b6d082662d438c26a1bfe653eaf6edcb117ccf8767975c37ab0238ca4c77574e2706f9b238a15ad4d

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\CDS.exe
MD5
424bf196deaeb4ddcafb78e137fa560a

SHA1
007738e9486c904a3115daa6e8ba2ee692af58c8

SHA256
0963cef2f742a31b2604fe975f4471ae6a76641490fe60805db744fef9bdd5d2

SHA512
a9be6dd5b2ed84baea34e0f1b1e8f5388ce3662c5dcb6a80c2d175be95f9598312837420c07b52cdfaa9e94bcffd8c7a2b9db2b551dfac171bce4b92f466e797

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\CDS.exe
MD5
424bf196deaeb4ddcafb78e137fa560a

SHA1
007738e9486c904a3115daa6e8ba2ee692af58c8

SHA256
0963cef2f742a31b2604fe975f4471ae6a76641490fe60805db744fef9bdd5d2

SHA512
a9be6dd5b2ed84baea34e0f1b1e8f5388ce3662c5dcb6a80c2d175be95f9598312837420c07b52cdfaa9e94bcffd8c7a2b9db2b551dfac171bce4b92f466e797

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\c.dat
MD5
32687f1be72453b7719a386a0cdb84ca

SHA1
1da4226e6fd96db2a0e891dce2a95a13efd19e9a

SHA256
d2ad96351f6c8178149cb1d7d15a476e9c1064681f2499ba10a557740d0ae605

SHA512
0d5cb84f46b1ecdeb1c08ff82d304eace186003d9de1849d5772d332c5779596bb24dec3cf89f6eff21914c5a509a541eaed03f08781ef9598cc38bcf4850340

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\crypted.exe
MD5
0a625d6ba8cb88acfcdfc589424d11c5

SHA1
28eacd9a15b0bb1d72e5f4303f33087deb7284c3

SHA256
6d9f82bb77aa90c3d21c890cb8105f3978916031a444bcdd81cd52de6edd2f82

SHA512
20bd27ad19f066dbe89d359c83de64678d9d1b796ff218b689cd137b9dd88632af182b0307352179ce5b3fc06750286eaee6495547c98fe538fdde49d53f1cb9

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\crypted.exe
MD5
0a625d6ba8cb88acfcdfc589424d11c5

SHA1
28eacd9a15b0bb1d72e5f4303f33087deb7284c3

SHA256
6d9f82bb77aa90c3d21c890cb8105f3978916031a444bcdd81cd52de6edd2f82

SHA512
20bd27ad19f066dbe89d359c83de64678d9d1b796ff218b689cd137b9dd88632af182b0307352179ce5b3fc06750286eaee6495547c98fe538fdde49d53f1cb9

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\fs.settings
MD5
68934a3e9455fa72420237eb05902327

SHA1
7cb6efb98ba5972a9b5090dc2e517fe14d12cb04

SHA256
fcbcf165908dd18a9e49f7ff27810176db8e9f63b4352213741664245224f8aa

SHA512
719fa67eef49c4b2a2b83f0c62bddd88c106aaadb7e21ae057c8802b700e36f81fe3f144812d8b05d66dc663d908b25645e153262cf6d457aa34e684af9e328d

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\lua5.1.dll
MD5
c3256800dce47c14acc83ccca4c3e2ac

SHA1
9d126818c66991dbc3813a65eddb88bbcf77f30a

SHA256
f26f4f66022acc96d0319c09814ebeda60f4ab96b63b6262045dc786dc7c5866

SHA512
6865a98ad8a6bd02d1ba35a28b36b6306af393f5e9ad767cd6da027bb021f7399d629423f510c44436ac3e4603b6c606493edf8b14d21fabf3eab16d37bd0d25

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\lua5.1.dll
MD5
c3256800dce47c14acc83ccca4c3e2ac

SHA1
9d126818c66991dbc3813a65eddb88bbcf77f30a

SHA256
f26f4f66022acc96d0319c09814ebeda60f4ab96b63b6262045dc786dc7c5866

SHA512
6865a98ad8a6bd02d1ba35a28b36b6306af393f5e9ad767cd6da027bb021f7399d629423f510c44436ac3e4603b6c606493edf8b14d21fabf3eab16d37bd0d25

Download Submit