njrat | 8c6ca1c8128480b39bed5d584b13880534bc0155cf05df5ab5ebd1dc63f53207

Analysis

max time kernel
146s
max time network
144s
platform
windows10_x64
resource
win10-en-20211014
submitted
02-11-2021 13:07

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General

Target

Q4EtLThkYlEkFvu.exe
Size

474KB
MD5

18156edcb0549e6e856811b5a57b951d
SHA1

c9c773a0157562c8fa800aad23c670486fd63fbd
SHA256

8c6ca1c8128480b39bed5d584b13880534bc0155cf05df5ab5ebd1dc63f53207
SHA512

c881d069a6403a22b02ee71dd062fdb6718f23c6c1de859d142dcd9e4c642555c3c5f72bc6b0aa1bab3ff6539a7c59e3415bca0b8f636cfcc5b9dbd5afb39775

Score

10^/10

njrat order1 persistence trojan

Malware Config

Extracted

Family

njrat

Version

v4.0

Botnet

order1

45.137.22.146:5553

Mutex

Windows

Attributes

reg_key
Windows
splitter
|-F-|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 4 IoCs

Processes:

Payload.exePayload.exePayload.exePayload.exe

pid process

980 Payload.exe
2636 Payload.exe
3444 Payload.exe
3176 Payload.exe

pid	process
980	Payload.exe
2636	Payload.exe
3444	Payload.exe
3176	Payload.exe

Drops startup file 2 IoCs

Processes:

Q4EtLThkYlEkFvu.exePayload.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	Q4EtLThkYlEkFvu.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	Payload.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Q4EtLThkYlEkFvu.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Windows\\Payload.exe"	Q4EtLThkYlEkFvu.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Q4EtLThkYlEkFvu.exePayload.exe

description	pid	process	target process
PID 4092 set thread context of 1080	4092	Q4EtLThkYlEkFvu.exe	Q4EtLThkYlEkFvu.exe
PID 980 set thread context of 3176	980	Payload.exe	Payload.exe

Drops file in Windows directory 2 IoCs

Processes:

Q4EtLThkYlEkFvu.exeattrib.exe

description ioc process

File created C:\Windows\Payload.exe Q4EtLThkYlEkFvu.exe
File opened for modification C:\Windows\Payload.exe attrib.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

2548 schtasks.exe
3664 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Payload.exe

pid process

980 Payload.exe
980 Payload.exe
980 Payload.exe
980 Payload.exe

description	ioc	process
File created	C:\Windows\Payload.exe	Q4EtLThkYlEkFvu.exe
File opened for modification	C:\Windows\Payload.exe	attrib.exe

pid	process
2548	schtasks.exe
3664	schtasks.exe

pid	process
980	Payload.exe
980	Payload.exe
980	Payload.exe
980	Payload.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

Processes:

Payload.exePayload.exe

description	pid	process
Token: SeDebugPrivilege	980	Payload.exe
Token: SeDebugPrivilege	3176	Payload.exe
Token: 33	3176	Payload.exe
Token: SeIncBasePriorityPrivilege	3176	Payload.exe
Token: 33	3176	Payload.exe
Token: SeIncBasePriorityPrivilege	3176	Payload.exe
Token: 33	3176	Payload.exe
Token: SeIncBasePriorityPrivilege	3176	Payload.exe
Token: 33	3176	Payload.exe
Token: SeIncBasePriorityPrivilege	3176	Payload.exe
Token: 33	3176	Payload.exe
Token: SeIncBasePriorityPrivilege	3176	Payload.exe
Token: 33	3176	Payload.exe
Token: SeIncBasePriorityPrivilege	3176	Payload.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

Q4EtLThkYlEkFvu.exeQ4EtLThkYlEkFvu.exePayload.exe

description	pid	process	target process
PID 4092 wrote to memory of 2548	4092	Q4EtLThkYlEkFvu.exe	schtasks.exe
PID 4092 wrote to memory of 2548	4092	Q4EtLThkYlEkFvu.exe	schtasks.exe
PID 4092 wrote to memory of 2548	4092	Q4EtLThkYlEkFvu.exe	schtasks.exe
PID 4092 wrote to memory of 1080	4092	Q4EtLThkYlEkFvu.exe	Q4EtLThkYlEkFvu.exe
PID 4092 wrote to memory of 1080	4092	Q4EtLThkYlEkFvu.exe	Q4EtLThkYlEkFvu.exe
PID 4092 wrote to memory of 1080	4092	Q4EtLThkYlEkFvu.exe	Q4EtLThkYlEkFvu.exe
PID 4092 wrote to memory of 1080	4092	Q4EtLThkYlEkFvu.exe	Q4EtLThkYlEkFvu.exe
PID 4092 wrote to memory of 1080	4092	Q4EtLThkYlEkFvu.exe	Q4EtLThkYlEkFvu.exe
PID 4092 wrote to memory of 1080	4092	Q4EtLThkYlEkFvu.exe	Q4EtLThkYlEkFvu.exe
PID 4092 wrote to memory of 1080	4092	Q4EtLThkYlEkFvu.exe	Q4EtLThkYlEkFvu.exe
PID 4092 wrote to memory of 1080	4092	Q4EtLThkYlEkFvu.exe	Q4EtLThkYlEkFvu.exe
PID 1080 wrote to memory of 980	1080	Q4EtLThkYlEkFvu.exe	Payload.exe
PID 1080 wrote to memory of 980	1080	Q4EtLThkYlEkFvu.exe	Payload.exe
PID 1080 wrote to memory of 980	1080	Q4EtLThkYlEkFvu.exe	Payload.exe
PID 1080 wrote to memory of 1104	1080	Q4EtLThkYlEkFvu.exe	attrib.exe
PID 1080 wrote to memory of 1104	1080	Q4EtLThkYlEkFvu.exe	attrib.exe
PID 1080 wrote to memory of 1104	1080	Q4EtLThkYlEkFvu.exe	attrib.exe
PID 980 wrote to memory of 3664	980	Payload.exe	schtasks.exe
PID 980 wrote to memory of 3664	980	Payload.exe	schtasks.exe
PID 980 wrote to memory of 3664	980	Payload.exe	schtasks.exe
PID 980 wrote to memory of 2636	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 2636	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 2636	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 3444	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 3444	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 3444	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 3176	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 3176	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 3176	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 3176	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 3176	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 3176	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 3176	980	Payload.exe	Payload.exe
PID 980 wrote to memory of 3176	980	Payload.exe	Payload.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1104 attrib.exe

pid	process
1104	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Q4EtLThkYlEkFvu.exe
"C:\Users\Admin\AppData\Local\Temp\Q4EtLThkYlEkFvu.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4092

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yqbepZrEYRD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7693.tmp"
2⤵
- Creates scheduled task(s)
PID:2548

C:\Users\Admin\AppData\Local\Temp\Q4EtLThkYlEkFvu.exe
"C:\Users\Admin\AppData\Local\Temp\Q4EtLThkYlEkFvu.exe"
2⤵
- Drops startup file
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1080

C:\Windows\Payload.exe
"C:\Windows\Payload.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:980

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yqbepZrEYRD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3177.tmp"
4⤵
- Creates scheduled task(s)
PID:3664

C:\Windows\Payload.exe
"C:\Windows\Payload.exe"
4⤵
- Executes dropped EXE
PID:2636

C:\Windows\Payload.exe
"C:\Windows\Payload.exe"
4⤵
- Executes dropped EXE
PID:3444

C:\Windows\Payload.exe
"C:\Windows\Payload.exe"
4⤵
- Executes dropped EXE
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
PID:3176

C:\Windows\SysWOW64\attrib.exe
attrib +h +r +s "C:\Windows\Payload.exe"
3⤵
- Drops file in Windows directory
- Views/modifies file attributes
PID:1104

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Hidden Files and Directories

T1158

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Hidden Files and Directories

T1158

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Payload.exe.log
MD5
0c2899d7c6746f42d5bbe088c777f94c

SHA1
622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

SHA256
5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

SHA512
ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Q4EtLThkYlEkFvu.exe.log
MD5
0c2899d7c6746f42d5bbe088c777f94c

SHA1
622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

SHA256
5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

SHA512
ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk
MD5
f39dc7f3fcd45c5b85654093a9be1cd7

SHA1
e6b05f26f3912fece3019976b30f8a45ce62dc56

SHA256
9fbf8e6e7e4c29da69ae34498caa6a622990eda06105fdc30b5bbdfc7a5916ce

SHA512
6d849f5f113a33297b6e2bdac82aa5c3b843c39c8430003881a0d74052b90359a864018f80414c38f23cd99da6eccf6efc153bba1954fab2df036cd1f724cd17

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows.lnk
MD5
290cd837d2a0d0e96a19d0881c8b20aa

SHA1
d2499dfe5e480e7297f7356dbf8d4dedcf623c9a

SHA256
c7f2f4c8a97c65e74645dc1c63dc46a9a463968de209f0132c462a56a24a5b5d

SHA512
c786161057cbc27b49faf9348cfb1359ee4df668ef784a8794860dedfc69db130ff9d1c60d300caf666c7a21b2da4628d3958f8b3a69ce252850ec47e6ec3e7c

Download Submit
C:\Windows\Payload.exe
MD5
18156edcb0549e6e856811b5a57b951d

SHA1
c9c773a0157562c8fa800aad23c670486fd63fbd

SHA256
8c6ca1c8128480b39bed5d584b13880534bc0155cf05df5ab5ebd1dc63f53207

SHA512
c881d069a6403a22b02ee71dd062fdb6718f23c6c1de859d142dcd9e4c642555c3c5f72bc6b0aa1bab3ff6539a7c59e3415bca0b8f636cfcc5b9dbd5afb39775

Download Submit
C:\Windows\Payload.exe
MD5
18156edcb0549e6e856811b5a57b951d

SHA1
c9c773a0157562c8fa800aad23c670486fd63fbd

SHA256
8c6ca1c8128480b39bed5d584b13880534bc0155cf05df5ab5ebd1dc63f53207

SHA512
c881d069a6403a22b02ee71dd062fdb6718f23c6c1de859d142dcd9e4c642555c3c5f72bc6b0aa1bab3ff6539a7c59e3415bca0b8f636cfcc5b9dbd5afb39775

Download Submit
C:\Windows\Payload.exe
MD5
18156edcb0549e6e856811b5a57b951d

SHA1
c9c773a0157562c8fa800aad23c670486fd63fbd

SHA256
8c6ca1c8128480b39bed5d584b13880534bc0155cf05df5ab5ebd1dc63f53207

SHA512
c881d069a6403a22b02ee71dd062fdb6718f23c6c1de859d142dcd9e4c642555c3c5f72bc6b0aa1bab3ff6539a7c59e3415bca0b8f636cfcc5b9dbd5afb39775

Download Submit
C:\Windows\Payload.exe
MD5
18156edcb0549e6e856811b5a57b951d

SHA1
c9c773a0157562c8fa800aad23c670486fd63fbd

SHA256
8c6ca1c8128480b39bed5d584b13880534bc0155cf05df5ab5ebd1dc63f53207

SHA512
c881d069a6403a22b02ee71dd062fdb6718f23c6c1de859d142dcd9e4c642555c3c5f72bc6b0aa1bab3ff6539a7c59e3415bca0b8f636cfcc5b9dbd5afb39775

Download Submit
C:\Windows\Payload.exe
MD5
18156edcb0549e6e856811b5a57b951d

SHA1
c9c773a0157562c8fa800aad23c670486fd63fbd

SHA256
8c6ca1c8128480b39bed5d584b13880534bc0155cf05df5ab5ebd1dc63f53207

SHA512
c881d069a6403a22b02ee71dd062fdb6718f23c6c1de859d142dcd9e4c642555c3c5f72bc6b0aa1bab3ff6539a7c59e3415bca0b8f636cfcc5b9dbd5afb39775

Download Submit
memory/980-132-0x0000000000000000-mapping.dmp

Download
memory/980-142-0x0000000004E80000-0x000000000537E000-memory.dmp

Filesize
5.0MB

Download
memory/1080-125-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1080-126-0x000000000040836E-mapping.dmp

Download
memory/1104-135-0x0000000000000000-mapping.dmp

Download
memory/2548-124-0x0000000000000000-mapping.dmp

Download
memory/3176-149-0x000000000040836E-mapping.dmp

Download
memory/3176-161-0x0000000005A50000-0x0000000005A51000-memory.dmp

Filesize
4KB

Download
memory/3176-158-0x00000000058E0000-0x00000000058E1000-memory.dmp

Filesize
4KB

Download
memory/3664-145-0x0000000000000000-mapping.dmp

Download
memory/4092-122-0x0000000008FC0000-0x0000000008FC1000-memory.dmp

Filesize
4KB

Download
memory/4092-121-0x0000000005A20000-0x0000000005A27000-memory.dmp

Filesize
28KB

Download
memory/4092-120-0x0000000005550000-0x00000000055E2000-memory.dmp

Filesize
584KB

Download
memory/4092-119-0x0000000005690000-0x0000000005691000-memory.dmp

Filesize
4KB

Download
memory/4092-118-0x00000000055F0000-0x00000000055F1000-memory.dmp

Filesize
4KB

Download
memory/4092-117-0x0000000005C40000-0x0000000005C41000-memory.dmp

Filesize
4KB

Download
memory/4092-123-0x0000000008F20000-0x0000000008F4C000-memory.dmp

Filesize
176KB

Download
memory/4092-115-0x0000000000D20000-0x0000000000D21000-memory.dmp

Filesize
4KB

Download