b873c4fa6ef7f4d56d1f347bd88468fed658fb77b948d50a6f1f719cbc4b781f

Analysis

max time kernel
104s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
resource tags

arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
submitted
16-07-2022 17:08

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General

Target

bD15.exe
Size

36KB
MD5

b73984062282fbe1c09bb14415159a39
SHA1

106709e5611ba9bfae948c55c8ba1bd3195bf4f5
SHA256

b873c4fa6ef7f4d56d1f347bd88468fed658fb77b948d50a6f1f719cbc4b781f
SHA512

8e905f8316adf5624b5ee33a73c736c4721c81e04107a7145e871c3430b35fdb6687edd4a82f9a6b464ccee3824de1dbac9ecb330418ec6fc6d5236f353a3629

Score

10^/10

suricata

Malware Config

Signatures

suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Capture)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Capture)
suricata
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Remote Desktop)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Remote Desktop)
suricata
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Remote Desktop)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Remote Desktop)
suricata

Drops startup file 2 IoCs

Processes:

bD15.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Update.lnk	bD15.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Update.lnk	bD15.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

1468 PING.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

bD15.exe

description pid process

Token: SeDebugPrivilege 3624 bD15.exe

pid	process
1468	PING.EXE

description	pid	process
Token: SeDebugPrivilege	3624	bD15.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

bD15.execmd.exe

description	pid	process	target process
PID 3624 wrote to memory of 2152	3624	bD15.exe	cmd.exe
PID 3624 wrote to memory of 2152	3624	bD15.exe	cmd.exe
PID 2152 wrote to memory of 1468	2152	cmd.exe	PING.EXE
PID 2152 wrote to memory of 1468	2152	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\bD15.exe
"C:\Users\Admin\AppData\Local\Temp\bD15.exe"
1⤵
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3624

C:\Windows\SYSTEM32\cmd.exe
cmd.exe /c ping 0 -n 3 & del "C:\Users\Admin\AppData\Local\Temp\bD15.exe" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2152

C:\Windows\system32\PING.EXE
ping 0 -n 3
3⤵
- Runs ping.exe
PID:1468

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1468-132-0x0000000000000000-mapping.dmp

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memory/2152-131-0x0000000000000000-mapping.dmp

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memory/3624-130-0x00007FFC78720000-0x00007FFC79156000-memory.dmp

Filesize
10.2MB

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