bandook | f9d9d00a974b259b747217d021d95c7902c8a8807539db0bbf43939be972e281

Analysis

max time kernel
147s
max time network
115s
platform
windows10_x64
resource
win10v20210410
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 1 IoCs

Processes:

resource	yara_rule
behavioral8/memory/1852-122-0x0000000013C8F890-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
behavioral8/memory/192-115-0x0000000013140000-0x0000000013CEB000-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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\gihbdnxrpdcrfnlvkhvn = "C:\\Users\\Admin\\AppData\\Roaming\\gihbdnxrpdcrfnlvkhvn\\gihbdnxrpdcrfnlvkhvn.exe"	iexplore.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe

description	pid	process	target process
PID 3916 set thread context of 192	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 set thread context of 3096	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 set thread context of 1976	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 set thread context of 1852	3916	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 2 IoCs

Processes:

iexplore.exe

pid process

192 iexplore.exe
192 iexplore.exe

pid	process
192	iexplore.exe
192	iexplore.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe

description	pid	process	target process
PID 3916 wrote to memory of 192	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 192	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 192	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 192	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 192	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 3096	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 3096	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 3096	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 3096	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 3096	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 1976	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 1976	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 1976	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 1976	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 1976	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 1852	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 1852	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 1852	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 1852	3916	bc089259a1da012b1331933427fdf29e62e0c66cc4ca69c2319dd45f13a95c5d.exe	iexplore.exe
PID 3916 wrote to memory of 1852	3916	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:3916
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:192
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  - Adds Run key to start application
  PID:3096
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:1976
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:1852

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/192-116-0x0000000013C8F890-mapping.dmp

Download
memory/192-115-0x0000000013140000-0x0000000013CEB000-memory.dmp

Filesize
11.7MB

Download
memory/1852-122-0x0000000013C8F890-mapping.dmp

Download
memory/1976-120-0x0000000013C8F890-mapping.dmp

Download
memory/3096-118-0x0000000013C8F890-mapping.dmp

Download
memory/3916-114-0x00000000022F0000-0x00000000022F1000-memory.dmp

Filesize
4KB

Download