njrat | 809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5

Analysis

max time kernel
172s
max time network
187s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-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 4 IoCs

pid	Process
1620	archive.exe
772	winrar-x64-600ru.exe
1276	Process not Found
552	dllhost.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1936	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\66a423b5aff803461ae114b10bbacca0.exe	dllhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\66a423b5aff803461ae114b10bbacca0.exe	dllhost.exe

Loads dropped DLL 2 IoCs

pid	Process
1772	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe
1620	archive.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\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

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\Main	winrar-x64-600ru.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe
552	dllhost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
772	winrar-x64-600ru.exe
552	dllhost.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

description	pid	Process
Token: SeDebugPrivilege	552	dllhost.exe
Token: 33	552	dllhost.exe
Token: SeIncBasePriorityPrivilege	552	dllhost.exe
Token: 33	552	dllhost.exe
Token: SeIncBasePriorityPrivilege	552	dllhost.exe
Token: 33	552	dllhost.exe
Token: SeIncBasePriorityPrivilege	552	dllhost.exe
Token: 33	552	dllhost.exe
Token: SeIncBasePriorityPrivilege	552	dllhost.exe
Token: 33	552	dllhost.exe
Token: SeIncBasePriorityPrivilege	552	dllhost.exe
Token: 33	552	dllhost.exe
Token: SeIncBasePriorityPrivilege	552	dllhost.exe
Token: 33	552	dllhost.exe
Token: SeIncBasePriorityPrivilege	552	dllhost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

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

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1772 wrote to memory of 1620	1772	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	28
PID 1772 wrote to memory of 1620	1772	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	28
PID 1772 wrote to memory of 1620	1772	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	28
PID 1772 wrote to memory of 1620	1772	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	28
PID 1772 wrote to memory of 772	1772	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	29
PID 1772 wrote to memory of 772	1772	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	29
PID 1772 wrote to memory of 772	1772	809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe	29
PID 1620 wrote to memory of 552	1620	archive.exe	31
PID 1620 wrote to memory of 552	1620	archive.exe	31
PID 1620 wrote to memory of 552	1620	archive.exe	31
PID 1620 wrote to memory of 552	1620	archive.exe	31
PID 552 wrote to memory of 1936	552	dllhost.exe	32
PID 552 wrote to memory of 1936	552	dllhost.exe	32
PID 552 wrote to memory of 1936	552	dllhost.exe	32
PID 552 wrote to memory of 1936	552	dllhost.exe	32

C:\Users\Admin\AppData\Local\Temp\809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe
"C:\Users\Admin\AppData\Local\Temp\809b746c32451069d87c1d859ea60144708a96674fc69b471ea132b16172e0c5.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1772
- C:\Users\Admin\AppData\Local\Temp\archive.exe
  "C:\Users\Admin\AppData\Local\Temp\archive.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1620
- - 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:552
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\dllhost.exe" "dllhost.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      PID:1936
- C:\Users\Admin\AppData\Local\Temp\winrar-x64-600ru.exe
  "C:\Users\Admin\AppData\Local\Temp\winrar-x64-600ru.exe"
  2⤵
  - Executes dropped EXE
  - Modifies Internet Explorer settings
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:772

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

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
\Users\Admin\AppData\Local\Temp\winrar-x64-600ru.exe

Filesize
3.3MB

MD5
029e6696e782e370c85f252a0413b7b4

SHA1
3c8692800d51a9292082eed8d0efa994199c1b28

SHA256
4f298e5977a9fd8621686d26512d457681dfa747daa465d8c3fa1970e5d477a2

SHA512
da58318ec73a93abbfdf7e0adbff04984588cd4af5273f47e79a9236793b482e63ade70653dea2de55114d8b4dae6cf42fe074ef9d83ddb30f0d7ee26fd65661

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

Filesize
3.3MB

MD5
029e6696e782e370c85f252a0413b7b4

SHA1
3c8692800d51a9292082eed8d0efa994199c1b28

SHA256
4f298e5977a9fd8621686d26512d457681dfa747daa465d8c3fa1970e5d477a2

SHA512
da58318ec73a93abbfdf7e0adbff04984588cd4af5273f47e79a9236793b482e63ade70653dea2de55114d8b4dae6cf42fe074ef9d83ddb30f0d7ee26fd65661

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

Filesize
40KB

MD5
bfdb6eb46b6ac86605a327d93f4d039c

SHA1
0ee8dc1ee6322ba886d6f4ce144b5cb42db5ddf9

SHA256
fa9a1522bea16315278125901c3d52ef3b3e62943f14a55d6a2e1fe540d0b176

SHA512
e43226d9178c3df29122583b1f3bc7835ea1595f76e54af2647c326713bc0264657e10baffb6d30f546e4be3618331d46b31793a67273a80c24a53bd2d3d4bbc

Download Submit
memory/552-82-0x0000000074230000-0x00000000747DB000-memory.dmp

Filesize
5.7MB

Download
memory/552-85-0x0000000074230000-0x00000000747DB000-memory.dmp

Filesize
5.7MB

Download
memory/1620-65-0x0000000074230000-0x00000000747DB000-memory.dmp

Filesize
5.7MB

Download
memory/1620-64-0x00000000757E1000-0x00000000757E3000-memory.dmp

Filesize
8KB

Download
memory/1620-75-0x0000000074230000-0x00000000747DB000-memory.dmp

Filesize
5.7MB

Download
memory/1620-81-0x0000000074230000-0x00000000747DB000-memory.dmp

Filesize
5.7MB

Download
memory/1772-54-0x00000000009D0000-0x0000000000D0C000-memory.dmp

Filesize
3.2MB

Download
memory/1772-55-0x000007FEFB941000-0x000007FEFB943000-memory.dmp

Filesize
8KB

Download