njrat | 1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17

Analysis

max time kernel
121s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
09-03-2022 17:48

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General

Target

1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17.exe
Size

3.2MB
MD5

37185cf06ca09e939d74fa52692cd2bb
SHA1

28d3d5093cb8e9a4cb41e27c345a755d171c4c91
SHA256

1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17
SHA512

4a68a39f7c8c978f9762a0f6347002572e438503b202696c499eedcb60db6bf5bdc260ec6471db4a608a51c97349aa18dd6cadf84487e21e9f10c2043e54f1a2

Score

10^/10

njrat hacker persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

hacker

0.tcp.ngrok.io:15460

Mutex

e16fcebad3ce9184f9d944ae59ba0549

Attributes

reg_key
e16fcebad3ce9184f9d944ae59ba0549
splitter
|'|'|

Signatures

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

Processes:

CDS.execrypted.exe

pid process

3812 CDS.exe
620 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

3812 CDS.exe

pid	process
3812	CDS.exe
620	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
3812	CDS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17.exe

description	ioc	process
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\\\""	1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce	1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17.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

3812 CDS.exe
3812 CDS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

AUDIODG.EXE

description pid process

Token: 33 4184 AUDIODG.EXE
Token: SeIncBasePriorityPrivilege 4184 AUDIODG.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

CDS.exe

pid process

3812 CDS.exe
3812 CDS.exe

pid	process
3812	CDS.exe
3812	CDS.exe

description	pid	process
Token: 33	4184	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	4184	AUDIODG.EXE

pid	process
3812	CDS.exe
3812	CDS.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17.exeCDS.execrypted.exefondue.exe

description	pid	process	target process
PID 1012 wrote to memory of 3812	1012	1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17.exe	CDS.exe
PID 1012 wrote to memory of 3812	1012	1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17.exe	CDS.exe
PID 1012 wrote to memory of 3812	1012	1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17.exe	CDS.exe
PID 3812 wrote to memory of 620	3812	CDS.exe	crypted.exe
PID 3812 wrote to memory of 620	3812	CDS.exe	crypted.exe
PID 3812 wrote to memory of 620	3812	CDS.exe	crypted.exe
PID 620 wrote to memory of 1320	620	crypted.exe	fondue.exe
PID 620 wrote to memory of 1320	620	crypted.exe	fondue.exe
PID 620 wrote to memory of 1320	620	crypted.exe	fondue.exe
PID 1320 wrote to memory of 1408	1320	fondue.exe	FonDUE.EXE
PID 1320 wrote to memory of 1408	1320	fondue.exe	FonDUE.EXE

C:\Users\Admin\AppData\Local\Temp\1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17.exe
"C:\Users\Admin\AppData\Local\Temp\1f67b271e2ab95fd8889b0f95752e17d4b489ea8bd51fff3e23d9e48e8b54c17.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1012

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:3812

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:620

C:\Windows\SysWOW64\fondue.exe
"C:\Windows\system32\fondue.exe" /enable-feature:NetFx3 /caller-name:mscoreei.dll
4⤵
- Suspicious use of WriteProcessMemory
PID:1320

C:\Windows\system32\FonDUE.EXE
"C:\Windows\sysnative\FonDUE.EXE" /enable-feature:NetFx3 /caller-name:mscoreei.dll
5⤵
PID:1408

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4fc 0x308
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4184

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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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
cfcc6c116bbafc7edc788d23aef4e42e

SHA1
93059f9e73432101df03c8aae9212a520924c1a6

SHA256
7b6c3336aadbf0e04354091bec671ec910d0ab84c8d1efc41e78ce54a396dcc6

SHA512
9ba5d175d4f4758e4a0be01c8c4902e7ac170b23547f5276f921e032579af08147fc112436e430855e128dc51784a4511511a43417670139633d8d86d6b1ea9d

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\crypted.exe
MD5
74eb284f990f386a431b29aa283b183a

SHA1
3d3b105507f2eb10401ff85d3dccb362bfa4be2c

SHA256
b7e864e25004fd10aa5af16c6cf43ef370dc8c1cb76deaaa684eef4291d5faa4

SHA512
d472d64de342a9197ea4d7cedf14ebf1a3ca7cd16a5f76218e0cf299b504e871f70345f9ce6960bb822d28345a4b4143b78aabc4a3abd8e45c2938e46eda5011

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\crypted.exe
MD5
74eb284f990f386a431b29aa283b183a

SHA1
3d3b105507f2eb10401ff85d3dccb362bfa4be2c

SHA256
b7e864e25004fd10aa5af16c6cf43ef370dc8c1cb76deaaa684eef4291d5faa4

SHA512
d472d64de342a9197ea4d7cedf14ebf1a3ca7cd16a5f76218e0cf299b504e871f70345f9ce6960bb822d28345a4b4143b78aabc4a3abd8e45c2938e46eda5011

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