njrat | 861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953

General

Target

861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe
Size

93KB
MD5

ccb06fa4b339cc8ff5ae2331dda084b4
SHA1

0d1af1ebe0cb29ebf9ea4c76a7630661553b64db
SHA256

861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953
SHA512

a716f4906ac8ba1135471deef804e886891cfdc7b3f8b8d471a8fec0aadb0a39051b5adb3930c6a715b2c7a6a46168bacb6ef9705925bfd02fd88b4ebc335952
SSDEEP

1536:InwEnYi9bzKuZ+8uZ3nV5XS65mkrPZ58kzQ+e+e+:IwaYi9bsh7J7M+e+e+

Score

10^/10

njrat steam discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

v4.0

Botnet

Steam

C2

40.80.147.203:8080

Mutex

Steam

Attributes

reg_key
Steam
splitter
|-F-|

Signatures

Njrat family
njrat
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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe

Drops startup file 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Steam.lnk	Steam.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Steam.exe	Steam.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Steam.exe	Steam.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Steam.exe	attrib.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Steam.lnk	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe

Executes dropped EXE 1 IoCs

pid	Process
436	Steam.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Steam = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Steam.URL"	Steam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Steam2 = "C:\\Windows\\Steam.exe"	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Steam2 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Steam.URL"	Steam.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Steam2 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Steam.URL"	Steam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Steam = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Steam.URL"	Steam.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Steam.exe	attrib.exe
File created	C:\Windows\Steam.exe	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Steam.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe
Token: 33	436	Steam.exe
Token: SeIncBasePriorityPrivilege	436	Steam.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3116 wrote to memory of 436	3116	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	85
PID 3116 wrote to memory of 436	3116	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	85
PID 3116 wrote to memory of 436	3116	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	85
PID 3116 wrote to memory of 1660	3116	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	86
PID 3116 wrote to memory of 1660	3116	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	86
PID 3116 wrote to memory of 1660	3116	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	86
PID 436 wrote to memory of 2856	436	Steam.exe	95
PID 436 wrote to memory of 2856	436	Steam.exe	95
PID 436 wrote to memory of 2856	436	Steam.exe	95
PID 436 wrote to memory of 4868	436	Steam.exe	96
PID 436 wrote to memory of 4868	436	Steam.exe	96
PID 436 wrote to memory of 4868	436	Steam.exe	96

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4868	attrib.exe
1660	attrib.exe
2856	attrib.exe

C:\Users\Admin\AppData\Local\Temp\861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe
"C:\Users\Admin\AppData\Local\Temp\861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3116
- C:\Windows\Steam.exe
  "C:\Windows\Steam.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:436
- - C:\Windows\SysWOW64\attrib.exe
    attrib +h +r +s "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Steam.exe"
    3⤵
    - Drops startup file
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2856
- - C:\Windows\SysWOW64\attrib.exe
    attrib +h +r +s "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Steam.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:4868
- C:\Windows\SysWOW64\attrib.exe
  attrib +h +r +s "C:\Windows\Steam.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:1660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Steam.lnk

Filesize
1KB

MD5
5894fc27dbc17d6254fdf4c22f337ca3

SHA1
1ac20a58e13e833779424b92885ae23010b0b09a

SHA256
9c5b7fd635989fe9eff2f87a4cad23b1f0e83d13ed6d6d7660448ffe59fe9e95

SHA512
816595c2735223689efba8a9a44d2f09280ad7eb1b186beadc9b689051153317cbca44e3c96a3d7d40f3e01a76b862c7494aff4f457bcac5b9663afb2698d208

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Steam.lnk

Filesize
1KB

MD5
32d92e6a7612faa1245bd83ba7885801

SHA1
a8adb758693b7b0fb1b671fc72f832f48995ee8b

SHA256
a04dcd75353ad382201dc9e4d75bc447fba4ebf5e252a56606c7d38ef8cbad5f

SHA512
ce293e55aa73e63350b5f48d61a22eb8fb3753c104c23bc571533e26b0e422d5792197b77ad8e781e3b92b0b073efd0c49619587691954481c3079364e25c454

Download Submit
C:\Windows\Steam.exe

Filesize
93KB

MD5
ccb06fa4b339cc8ff5ae2331dda084b4

SHA1
0d1af1ebe0cb29ebf9ea4c76a7630661553b64db

SHA256
861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953

SHA512
a716f4906ac8ba1135471deef804e886891cfdc7b3f8b8d471a8fec0aadb0a39051b5adb3930c6a715b2c7a6a46168bacb6ef9705925bfd02fd88b4ebc335952

Download Submit
memory/436-22-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/436-16-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/436-23-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/436-25-0x0000000005930000-0x00000000059C2000-memory.dmp

Filesize
584KB

Download
memory/436-26-0x0000000005920000-0x000000000592A000-memory.dmp

Filesize
40KB

Download
memory/436-27-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/3116-5-0x0000000006310000-0x00000000068B4000-memory.dmp

Filesize
5.6MB

Download
memory/3116-15-0x0000000074D0E000-0x0000000074D0F000-memory.dmp

Filesize
4KB

Download
memory/3116-2-0x0000000005370000-0x000000000540C000-memory.dmp

Filesize
624KB

Download
memory/3116-1-0x00000000009E0000-0x00000000009FE000-memory.dmp

Filesize
120KB

Download
memory/3116-0-0x0000000074D0E000-0x0000000074D0F000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads