njrat | 809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 09:43

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General

Target

809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe
Size

3.2MB
MD5

eb7519e15e13afb38b3fea8c2478b9d7
SHA1

df585b37ef1a93770ef2c3a28cbd00f759053497
SHA256

809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5
SHA512

386da681b7405e782f94da1206c3870d82e27a8a2d63e0ee5aef8140fb1110e6d7a811a68695f97bc53411c563e7c3ae9731b84450c6a5a30e8305c5ed0f377a
SSDEEP

98304:Kq1wzyH5CJmGoukfSdjGVK0EaKftVjpX/Fa:KqH07quGVGaKfRI

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

10.0.2.15:7777

Mutex

66a423b5aff803461ae114b10bbacca0

Attributes

reg_key
66a423b5aff803461ae114b10bbacca0
splitter
|'|'|

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
3404	archive.exe
1276	winrar-x64-600ru.exe
32	dllhost.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
2360	netsh.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	archive.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\66a423b5aff803461ae114b10bbacca0.exe	dllhost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\66a423b5aff803461ae114b10bbacca0.exe	dllhost.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\66a423b5aff803461ae114b10bbacca0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\66a423b5aff803461ae114b10bbacca0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\dllhost.exe\" .."	dllhost.exe

Drops autorun.inf file 1 TTPs 3 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File created	C:\autorun.inf	dllhost.exe
File opened for modification	C:\autorun.inf	dllhost.exe
File created	D:\autorun.inf	dllhost.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 64 IoCs

pid	Process
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe
32	dllhost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
32	dllhost.exe

Suspicious use of AdjustPrivilegeToken 29 IoCs

description	pid	Process
Token: SeDebugPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe
Token: 33	32	dllhost.exe
Token: SeIncBasePriorityPrivilege	32	dllhost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1276	winrar-x64-600ru.exe
1276	winrar-x64-600ru.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3780 wrote to memory of 3404	3780	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	80
PID 3780 wrote to memory of 3404	3780	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	80
PID 3780 wrote to memory of 3404	3780	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	80
PID 3780 wrote to memory of 1276	3780	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	81
PID 3780 wrote to memory of 1276	3780	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	81
PID 3404 wrote to memory of 32	3404	archive.exe	86
PID 3404 wrote to memory of 32	3404	archive.exe	86
PID 3404 wrote to memory of 32	3404	archive.exe	86
PID 32 wrote to memory of 2360	32	dllhost.exe	87
PID 32 wrote to memory of 2360	32	dllhost.exe	87
PID 32 wrote to memory of 2360	32	dllhost.exe	87

C:\Users\Admin\AppData\Local\Temp\809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe
"C:\Users\Admin\AppData\Local\Temp\809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3780
- C:\Users\Admin\AppData\Local\Temp\archive.exe
  "C:\Users\Admin\AppData\Local\Temp\archive.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:3404
- - C:\Users\Admin\AppData\Roaming\dllhost.exe
    "C:\Users\Admin\AppData\Roaming\dllhost.exe"
    3⤵
    - Executes dropped EXE
    - Drops startup file
    - Adds Run key to start application
    - Drops autorun.inf file
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:32
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\dllhost.exe" "dllhost.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      PID:2360
- C:\Users\Admin\AppData\Local\Temp\winrar-x64-600ru.exe
  "C:\Users\Admin\AppData\Local\Temp\winrar-x64-600ru.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1276

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Modify Existing Service

T1031

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

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
40KB

MD5
bfdb6eb46b6ac86605a327d93f4d039c

SHA1
0ee8dc1ee6322ba886d6f4ce144b5cb42db5ddf9

SHA256
fa9a1522bea16315278125901c3d52ef3b3e62943f14a55d6a2e1fe540d0b176

SHA512
e43226d9178c3df29122583b1f3bc7835ea1595f76e54af2647c326713bc0264657e10baffb6d30f546e4be3618331d46b31793a67273a80c24a53bd2d3d4bbc

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

Filesize
40KB

MD5
bfdb6eb46b6ac86605a327d93f4d039c

SHA1
0ee8dc1ee6322ba886d6f4ce144b5cb42db5ddf9

SHA256
fa9a1522bea16315278125901c3d52ef3b3e62943f14a55d6a2e1fe540d0b176

SHA512
e43226d9178c3df29122583b1f3bc7835ea1595f76e54af2647c326713bc0264657e10baffb6d30f546e4be3618331d46b31793a67273a80c24a53bd2d3d4bbc

Download Submit
C:\Users\Admin\AppData\Local\Temp\winrar-x64-600ru.exe

Filesize
3.3MB

MD5
029e6696e782e370c85f252a0413b7b4

SHA1
3c8692800d51a9292082eed8d0efa994199c1b28

SHA256
4f298e5977a9fd8621686d26512d457681dfa747daa465d8c3fa1970e5d477a2

SHA512
da58318ec73a93abbfdf7e0adbff04984588cd4af5273f47e79a9236793b482e63ade70653dea2de55114d8b4dae6cf42fe074ef9d83ddb30f0d7ee26fd65661

Download Submit
C:\Users\Admin\AppData\Local\Temp\winrar-x64-600ru.exe

Filesize
3.3MB

MD5
029e6696e782e370c85f252a0413b7b4

SHA1
3c8692800d51a9292082eed8d0efa994199c1b28

SHA256
4f298e5977a9fd8621686d26512d457681dfa747daa465d8c3fa1970e5d477a2

SHA512
da58318ec73a93abbfdf7e0adbff04984588cd4af5273f47e79a9236793b482e63ade70653dea2de55114d8b4dae6cf42fe074ef9d83ddb30f0d7ee26fd65661

Download Submit
C:\Users\Admin\AppData\Roaming\dllhost.exe

Filesize
40KB

MD5
bfdb6eb46b6ac86605a327d93f4d039c

SHA1
0ee8dc1ee6322ba886d6f4ce144b5cb42db5ddf9

SHA256
fa9a1522bea16315278125901c3d52ef3b3e62943f14a55d6a2e1fe540d0b176

SHA512
e43226d9178c3df29122583b1f3bc7835ea1595f76e54af2647c326713bc0264657e10baffb6d30f546e4be3618331d46b31793a67273a80c24a53bd2d3d4bbc

Download Submit
C:\Users\Admin\AppData\Roaming\dllhost.exe

Filesize
40KB

MD5
bfdb6eb46b6ac86605a327d93f4d039c

SHA1
0ee8dc1ee6322ba886d6f4ce144b5cb42db5ddf9

SHA256
fa9a1522bea16315278125901c3d52ef3b3e62943f14a55d6a2e1fe540d0b176

SHA512
e43226d9178c3df29122583b1f3bc7835ea1595f76e54af2647c326713bc0264657e10baffb6d30f546e4be3618331d46b31793a67273a80c24a53bd2d3d4bbc

Download Submit
memory/32-151-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/32-149-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/3404-142-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/3404-148-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/3780-141-0x00007FFC18140000-0x00007FFC18C01000-memory.dmp

Filesize
10.8MB

Download
memory/3780-132-0x0000000000650000-0x000000000098C000-memory.dmp

Filesize
3.2MB

Download
memory/3780-133-0x00007FFC18140000-0x00007FFC18C01000-memory.dmp

Filesize
10.8MB

Download
memory/3780-134-0x00007FFC18140000-0x00007FFC18C01000-memory.dmp

Filesize
10.8MB

Download