formbook | 63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9 | Triage

Analysis

max time kernel
143s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
05-04-2023 09:44

Sharing

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General

Target

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe
Size

776KB
MD5

39f0289d03e15ee2dc83e561645c4a6d
SHA1

b20ed4c283b9af631ff89720f8242392c4b9543f
SHA256

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9
SHA512

63ecdbc41f9ad0939521e0120e1765320c262b1f47e0b869e47e3bd31fce5d4a10a9d78d6202c0cd6ce1f0d8708492685655e8d33974770c078ff39c3e3c9aad
SSDEEP

24576:uMwf+m50w/dByz96NHuhR60AkJApfZ5ZM1P3A6YlBE5GwM:uMwf0w/dsEwRTApfrW93AXbENM

Score

10^/10

formbook u34f rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

u34f

Decoy

carpool.bar

badburyparkbakery.co.uk

aigooglebot.com

arihantautogas.com

specmart.online

newschatgpt.net

mmcroberts.com

ativeerrtechnologies.com

pheonix-blog-lomg-1098.com

simplisetup.com

teorikatapublishing.com

stephanyvgrfingle.click

tropicoa.com

isystem.world

tiger-lion.space

mackenziefarms.net

tl8841.buzz

alfabank.credit

lockdaccesactolapqqk.com

directaccesspetroleum.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3052-159-0x0000000000400000-0x0000000001654000-memory.dmp	formbook

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

System Information Discovery

Processes:

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

Loads dropped DLL 1 IoCs

Processes:

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

pid process

1284 63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

pid process

3052 63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

pid	process
1284	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe
3052	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

description	pid	process	target process
PID 1284 set thread context of 3052	1284	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

Drops file in Program Files directory 1 IoCs

Processes:

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Servantry.ini	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

Drops file in Windows directory 1 IoCs

Processes:

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

description	ioc	process
File opened for modification	C:\Windows\Akustikerne\Blinker42.Vel33	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.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:

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

pid	process
3052	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe
3052	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

pid process

1284 63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

description	pid	process	target process
PID 1284 wrote to memory of 3052	1284	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe
PID 1284 wrote to memory of 3052	1284	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe
PID 1284 wrote to memory of 3052	1284	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe
PID 1284 wrote to memory of 3052	1284	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe	63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe

C:\Users\Admin\AppData\Local\Temp\63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe
"C:\Users\Admin\AppData\Local\Temp\63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1284

C:\Users\Admin\AppData\Local\Temp\63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe
"C:\Users\Admin\AppData\Local\Temp\63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9.exe"
2⤵
- Checks QEMU agent file
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:3052

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsi8F17.tmp\System.dll
Filesize
12KB

MD5
564bb0373067e1785cba7e4c24aab4bf

SHA1
7c9416a01d821b10b2eef97b80899d24014d6fc1

SHA256
7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5

SHA512
22c61a323cb9293d7ec5c7e7e60674d0e2f7b29d55be25eb3c128ea2cd7440a1400cee17c43896b996278007c0d247f331a9b8964e3a40a0eb1404a9596c4472

Download Submit
memory/3052-146-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3052-159-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3052-160-0x0000000001660000-0x0000000005D18000-memory.dmp

Filesize
70.7MB

Download
memory/3052-162-0x0000000001660000-0x0000000005D18000-memory.dmp

Filesize
70.7MB

Download
memory/3052-163-0x0000000036320000-0x000000003666A000-memory.dmp

Filesize
3.3MB

Download