bandook | f9d9d00a974b259b747217d021d95c7902c8a8807539db0bbf43939be972e281

Analysis

max time kernel
148s
max time network
155s
platform
windows7_x64
resource
win7v20210408
submitted
16-07-2021 17:35

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General

Target

bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe

Score

10^/10

bandook persistence rat trojan upx

Malware Config

Signatures

Bandook Payload 2 IoCs

Processes:

resource	yara_rule
behavioral7/memory/1620-62-0x0000000013C8F890-mapping.dmp	family_bandook
behavioral7/memory/1164-71-0x0000000013C8F890-mapping.dmp	family_bandook

Bandook RAT
Bandook is a remote access tool written in C++ and shipped with a loader written in Delphi.
rat trojan bandook

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral7/memory/1620-61-0x0000000013140000-0x0000000013CEB000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplore.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\wlobmncxhgiofafdhdwo = "C:\\Users\\Admin\\AppData\\Roaming\\wlobmncxhgiofafdhdwo\\wlobmncxhgiofafdhdwo.exe"	iexplore.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe

description	pid	process	target process
PID 1944 set thread context of 1620	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 set thread context of 740	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 set thread context of 996	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 set thread context of 1164	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

iexplore.exe

pid process

1620 iexplore.exe

pid	process
1620	iexplore.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe

description	pid	process	target process
PID 1944 wrote to memory of 1620	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 1620	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 1620	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 1620	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 1620	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 1620	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 740	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 740	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 740	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 740	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 740	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 740	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 996	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 996	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 996	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 996	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 996	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 996	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 1164	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 1164	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 1164	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 1164	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 1164	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 1944 wrote to memory of 1164	1944	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe
"C:\Users\Admin\AppData\Local\Temp\bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1620
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  - Adds Run key to start application
  PID:740
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:996
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:1164

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/740-65-0x0000000013C8F890-mapping.dmp

Download
memory/996-68-0x0000000013C8F890-mapping.dmp

Download
memory/1164-71-0x0000000013C8F890-mapping.dmp

Download
memory/1620-61-0x0000000013140000-0x0000000013CEB000-memory.dmp

Filesize
11.7MB

Download
memory/1620-62-0x0000000013C8F890-mapping.dmp

Download
memory/1944-59-0x0000000076691000-0x0000000076693000-memory.dmp

Filesize
8KB

Download
memory/1944-60-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download