njrat | 2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3

General

Target

2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
Size

389KB
MD5

01960910f4cc1692918f0643ac14dc3b
SHA1

f87f85850f233d55b6ce411591d62efeeb4d2d74
SHA256

2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3
SHA512

aad4bf6c0e4bc245d5c3e1c07d930d54b976e2caebbfa392eceb0768424564dc925d953f32b169c927501edaad53adf25537a75e8002d1bb00b445fe4caf7c07

Score

10^/10

njrat persistence trojan

Malware Config

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 2 IoCs

Processes:

DefenderUpdateAnalyse.exeDefenderUpdateAnalyse.exe

pid process

3544 DefenderUpdateAnalyse.exe
5112 DefenderUpdateAnalyse.exe

pid	process
3544	DefenderUpdateAnalyse.exe
5112	DefenderUpdateAnalyse.exe

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

Processes:

2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe

Drops startup file 2 IoCs

Processes:

DefenderUpdateAnalyse.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

DefenderUpdateAnalyse.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DefenderUpdateAnalyse.exe = "\"C:\\ProgramData\\DefenderUpdateAnalyse.exe\" .."	DefenderUpdateAnalyse.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DefenderUpdateAnalyse.exe = "\"C:\\ProgramData\\DefenderUpdateAnalyse.exe\" .."	DefenderUpdateAnalyse.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exeDefenderUpdateAnalyse.exe

description	pid	process	target process
PID 2888 set thread context of 3468	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
PID 3544 set thread context of 5112	3544	DefenderUpdateAnalyse.exe	DefenderUpdateAnalyse.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 29 IoCs

Processes:

2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exeDefenderUpdateAnalyse.exeDefenderUpdateAnalyse.exe

description	pid	process
Token: SeDebugPrivilege	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
Token: 33	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
Token: SeIncBasePriorityPrivilege	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
Token: SeDebugPrivilege	3544	DefenderUpdateAnalyse.exe
Token: 33	3544	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	3544	DefenderUpdateAnalyse.exe
Token: SeDebugPrivilege	5112	DefenderUpdateAnalyse.exe
Token: 33	5112	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	5112	DefenderUpdateAnalyse.exe
Token: 33	5112	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	5112	DefenderUpdateAnalyse.exe
Token: 33	5112	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	5112	DefenderUpdateAnalyse.exe
Token: 33	5112	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	5112	DefenderUpdateAnalyse.exe
Token: 33	5112	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	5112	DefenderUpdateAnalyse.exe
Token: 33	5112	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	5112	DefenderUpdateAnalyse.exe
Token: 33	5112	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	5112	DefenderUpdateAnalyse.exe
Token: 33	5112	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	5112	DefenderUpdateAnalyse.exe
Token: 33	5112	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	5112	DefenderUpdateAnalyse.exe
Token: 33	5112	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	5112	DefenderUpdateAnalyse.exe
Token: 33	5112	DefenderUpdateAnalyse.exe
Token: SeIncBasePriorityPrivilege	5112	DefenderUpdateAnalyse.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exeDefenderUpdateAnalyse.exe

description	pid	process	target process
PID 2888 wrote to memory of 3468	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
PID 2888 wrote to memory of 3468	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
PID 2888 wrote to memory of 3468	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
PID 2888 wrote to memory of 3468	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
PID 2888 wrote to memory of 3468	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
PID 2888 wrote to memory of 3468	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
PID 2888 wrote to memory of 3468	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
PID 2888 wrote to memory of 3468	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
PID 2888 wrote to memory of 3468	2888	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
PID 3468 wrote to memory of 3544	3468	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	DefenderUpdateAnalyse.exe
PID 3468 wrote to memory of 3544	3468	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	DefenderUpdateAnalyse.exe
PID 3468 wrote to memory of 3544	3468	2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe	DefenderUpdateAnalyse.exe
PID 3544 wrote to memory of 5112	3544	DefenderUpdateAnalyse.exe	DefenderUpdateAnalyse.exe
PID 3544 wrote to memory of 5112	3544	DefenderUpdateAnalyse.exe	DefenderUpdateAnalyse.exe
PID 3544 wrote to memory of 5112	3544	DefenderUpdateAnalyse.exe	DefenderUpdateAnalyse.exe
PID 3544 wrote to memory of 5112	3544	DefenderUpdateAnalyse.exe	DefenderUpdateAnalyse.exe
PID 3544 wrote to memory of 5112	3544	DefenderUpdateAnalyse.exe	DefenderUpdateAnalyse.exe
PID 3544 wrote to memory of 5112	3544	DefenderUpdateAnalyse.exe	DefenderUpdateAnalyse.exe
PID 3544 wrote to memory of 5112	3544	DefenderUpdateAnalyse.exe	DefenderUpdateAnalyse.exe
PID 3544 wrote to memory of 5112	3544	DefenderUpdateAnalyse.exe	DefenderUpdateAnalyse.exe
PID 3544 wrote to memory of 5112	3544	DefenderUpdateAnalyse.exe	DefenderUpdateAnalyse.exe

C:\Users\Admin\AppData\Local\Temp\2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
"C:\Users\Admin\AppData\Local\Temp\2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2888

C:\Users\Admin\AppData\Local\Temp\2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
C:\Users\Admin\AppData\Local\Temp\2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3468

C:\ProgramData\DefenderUpdateAnalyse.exe
"C:\ProgramData\DefenderUpdateAnalyse.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3544

C:\ProgramData\DefenderUpdateAnalyse.exe
C:\ProgramData\DefenderUpdateAnalyse.exe
4⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:5112

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\DefenderUpdateAnalyse.exe
Filesize
389KB

MD5
01960910f4cc1692918f0643ac14dc3b

SHA1
f87f85850f233d55b6ce411591d62efeeb4d2d74

SHA256
2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3

SHA512
aad4bf6c0e4bc245d5c3e1c07d930d54b976e2caebbfa392eceb0768424564dc925d953f32b169c927501edaad53adf25537a75e8002d1bb00b445fe4caf7c07

Download Submit
C:\ProgramData\DefenderUpdateAnalyse.exe
Filesize
389KB

MD5
01960910f4cc1692918f0643ac14dc3b

SHA1
f87f85850f233d55b6ce411591d62efeeb4d2d74

SHA256
2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3

SHA512
aad4bf6c0e4bc245d5c3e1c07d930d54b976e2caebbfa392eceb0768424564dc925d953f32b169c927501edaad53adf25537a75e8002d1bb00b445fe4caf7c07

Download Submit
C:\ProgramData\DefenderUpdateAnalyse.exe
Filesize
389KB

MD5
01960910f4cc1692918f0643ac14dc3b

SHA1
f87f85850f233d55b6ce411591d62efeeb4d2d74

SHA256
2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3

SHA512
aad4bf6c0e4bc245d5c3e1c07d930d54b976e2caebbfa392eceb0768424564dc925d953f32b169c927501edaad53adf25537a75e8002d1bb00b445fe4caf7c07

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\2a91aea6878d4101207c5590e652a0ea2aed8739742b778ae7fc8e9e9d6700c3.exe.log
Filesize
706B

MD5
2ef5ef69dadb8865b3d5b58c956077b8

SHA1
af2d869bac00685c745652bbd8b3fe82829a8998

SHA256
363502eb2a4e53ba02d2d85412b901fcf8e06de221736bdffa949799ef3d21e3

SHA512
66d4db5dd17d88e1d54ea0df3a7211a503dc4355de701259cefccc9f2e4e3ced9534b700099ffbb089a5a3acb082011c80b61801aa14aff76b379ce8f90d4fd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\DefenderUpdateAnalyse.exe.log
Filesize
706B

MD5
2ef5ef69dadb8865b3d5b58c956077b8

SHA1
af2d869bac00685c745652bbd8b3fe82829a8998

SHA256
363502eb2a4e53ba02d2d85412b901fcf8e06de221736bdffa949799ef3d21e3

SHA512
66d4db5dd17d88e1d54ea0df3a7211a503dc4355de701259cefccc9f2e4e3ced9534b700099ffbb089a5a3acb082011c80b61801aa14aff76b379ce8f90d4fd3

Download Submit
memory/2888-130-0x0000000000C40000-0x0000000000CAC000-memory.dmp

Filesize
432KB

Download
memory/2888-131-0x0000000008140000-0x00000000086E4000-memory.dmp

Filesize
5.6MB

Download
memory/2888-132-0x0000000007C60000-0x0000000007CF2000-memory.dmp

Filesize
584KB

Download
memory/2888-133-0x00000000087C0000-0x000000000885C000-memory.dmp

Filesize
624KB

Download
memory/3468-168-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-176-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-146-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-148-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-150-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-152-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-154-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-156-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-158-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-160-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-162-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-164-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-166-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-142-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-170-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-172-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-174-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-144-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-178-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-180-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-182-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-184-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-186-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-188-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-190-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-192-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-194-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-196-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-198-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-140-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-134-0x0000000000000000-mapping.dmp

Download
memory/3468-138-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3468-135-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3544-415-0x0000000000000000-mapping.dmp

Download
memory/5112-418-0x0000000000000000-mapping.dmp

Download
memory/5112-700-0x0000000005A00000-0x0000000005A0A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads