bandook | f9d9d00a974b259b747217d021d95c7902c8a8807539db0bbf43939be972e281

Analysis

max time kernel
148s
max time network
126s
platform
windows10_x64
resource
win10v20210410
submitted
16-07-2021 17:35

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General

Target

e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe

Score

10^/10

bandook persistence rat trojan upx

Malware Config

Signatures

Bandook Payload 1 IoCs

Processes:

resource	yara_rule
behavioral12/memory/2400-122-0x0000000013C8F890-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
behavioral12/memory/3704-115-0x0000000013140000-0x0000000013CEB000-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\jdtrkvjkdwllnlciapou = "C:\\Users\\Admin\\AppData\\Roaming\\jdtrkvjkdwllnlciapou\\jdtrkvjkdwllnlciapou.exe"	iexplore.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe

description	pid	process	target process
PID 3904 set thread context of 3704	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 set thread context of 3380	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 set thread context of 1464	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 set thread context of 2400	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.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

3704 iexplore.exe
3704 iexplore.exe

pid	process
3704	iexplore.exe
3704	iexplore.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe

description	pid	process	target process
PID 3904 wrote to memory of 3704	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 3704	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 3704	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 3704	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 3704	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 3380	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 3380	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 3380	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 3380	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 3380	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 1464	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 1464	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 1464	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 1464	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 1464	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 2400	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 2400	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 2400	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 2400	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe
PID 3904 wrote to memory of 2400	3904	e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe
"C:\Users\Admin\AppData\Local\Temp\e72ace3a76024645161ecb73c57083d38b85594df5117de94d782df9f48a10eb.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3904

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
PID:3704

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
2⤵
- Adds Run key to start application
PID:3380

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
2⤵
PID:1464

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
2⤵
PID:2400

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

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Downloads

memory/1464-120-0x0000000013C8F890-mapping.dmp

Download
memory/2400-122-0x0000000013C8F890-mapping.dmp

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memory/3380-118-0x0000000013C8F890-mapping.dmp

Download
memory/3704-115-0x0000000013140000-0x0000000013CEB000-memory.dmp

Filesize
11.7MB

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memory/3704-116-0x0000000013C8F890-mapping.dmp

Download
memory/3904-114-0x00000000006B0000-0x00000000007FA000-memory.dmp

Filesize
1.3MB

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