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

Drops startup file 5 IoCs

description	ioc	Process
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
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

Executes dropped EXE 1 IoCs

pid	Process
2476	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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\Steam2 = "C:\\Windows\\Steam.exe"	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\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-1-5-21-1163522206-1469769407-485553996-1000\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 created	C:\Windows\Steam.exe	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe
File opened for modification	C:\Windows\Steam.exe	attrib.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	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe
Token: 33	2476	Steam.exe
Token: SeIncBasePriorityPrivilege	2476	Steam.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1784 wrote to memory of 2476	1784	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	31
PID 1784 wrote to memory of 2476	1784	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	31
PID 1784 wrote to memory of 2476	1784	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	31
PID 1784 wrote to memory of 2476	1784	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	31
PID 1784 wrote to memory of 2484	1784	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	32
PID 1784 wrote to memory of 2484	1784	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	32
PID 1784 wrote to memory of 2484	1784	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	32
PID 1784 wrote to memory of 2484	1784	861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe	32
PID 2476 wrote to memory of 2144	2476	Steam.exe	34
PID 2476 wrote to memory of 2144	2476	Steam.exe	34
PID 2476 wrote to memory of 2144	2476	Steam.exe	34
PID 2476 wrote to memory of 2144	2476	Steam.exe	34
PID 2476 wrote to memory of 2812	2476	Steam.exe	35
PID 2476 wrote to memory of 2812	2476	Steam.exe	35
PID 2476 wrote to memory of 2812	2476	Steam.exe	35
PID 2476 wrote to memory of 2812	2476	Steam.exe	35

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2484	attrib.exe
2144	attrib.exe
2812	attrib.exe

C:\Users\Admin\AppData\Local\Temp\861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe
"C:\Users\Admin\AppData\Local\Temp\861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953.exe"
1⤵
- 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:1784
- 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:2476
- - 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:2144
- - 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:2812
- 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:2484

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

System Information Discovery

1

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
c698feb4275e8418a3bb62573a8567f7

SHA1
330cbc27250a6f145e16b3fbc3e25f69d6753b49

SHA256
6990585028dc93b82cc2c505bef9bd92862807d96909f16bbe712d0b533d7584

SHA512
8a3ad99d6803d4e9ce21d0b95536445da25f1616f9357007435aee384cd79ecd3fc48e52dcb9a0d24d821d96c6751ffba8d4cc69e889d7fa43017aef63007c55

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

Filesize
1008B

MD5
eba67b04117319b7dc98f3cd1ef1e8d1

SHA1
8e4a7e464ba63c04ddeaf58a2cf3b3da65c9d436

SHA256
e608fbd93cfdb35acc0af44c78c0e1645ea4640c2746d5d006ad5bfbc2f377ae

SHA512
8a9b67321450b73f1f65984a9295891a0e29ade7fd5afd4c0ab63bae06ade6050cb045c060532138774d179010b43ef329c7678b181b4c8f3ee08e7bba0842ca

Download Submit
C:\Windows\Steam.exe

Filesize
93KB

MD5
ccb06fa4b339cc8ff5ae2331dda084b4

SHA1
0d1af1ebe0cb29ebf9ea4c76a7630661553b64db

SHA256
861c62fc1b264801e17d6a61ac6579a3b7d6d39e2f35aec69fc1b8300f42c953

SHA512
a716f4906ac8ba1135471deef804e886891cfdc7b3f8b8d471a8fec0aadb0a39051b5adb3930c6a715b2c7a6a46168bacb6ef9705925bfd02fd88b4ebc335952

Download Submit
memory/1784-0-0x00000000746AE000-0x00000000746AF000-memory.dmp

Filesize
4KB

Download
memory/1784-1-0x0000000000B00000-0x0000000000B1E000-memory.dmp

Filesize
120KB

Download
memory/2476-10-0x0000000000170000-0x000000000018E000-memory.dmp

Filesize
120KB

Download
memory/2476-15-0x00000000746A0000-0x0000000074D8E000-memory.dmp

Filesize
6.9MB

Download
memory/2476-18-0x00000000746A0000-0x0000000074D8E000-memory.dmp

Filesize
6.9MB

Download
memory/2476-19-0x00000000746A0000-0x0000000074D8E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads