formbook | 770ba746cb4a0b449ce9da5fe4b8a0310c2fb0661b1ab6a94ea1936783e4f59e

Analysis

max time kernel
123s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
16-08-2023 02:14

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General

Target

afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe
Size

463KB
MD5

c36113ac380951204651c549f3eab824
SHA1

80cbd1c320ffb13cdc6139ff66ea28e2fb38e4e1
SHA256

afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9
SHA512

9124fafcf82946ff1b2273601099c9a3b0db0bc9be55e488fb1ca9420af5a1be5935e4ca24cb6347c7baa69235aaa0410264107a1121c7c6b6b6f121180abe45
SSDEEP

12288:XYAEUfI55HxlJQ57Wl3ZmwZgE+YY0jV86:XYApkVQ5iJmwZg/0jV86

Score

10^/10

formbook s27k rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

s27k

Decoy

barbecue-electrique.info

leaffonly.com

h-two-vision.com

milodongym.com

speakerboxstudios.com

s61wes7t5ak1.xyz

truthistanbul.xyz

noahmarean.com

innova-strategic.com

recetasfaciles.online

williamsburgpartners.com

rdrfa.icu

happyhedgehogpress.com

zielhomefurnishing.store

jscd66.com

totallyvaultworthy.com

hexagongroupusa.com

a990h5ipg0.top

arkamailers.com

eqpmjdcw.click

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/220-140-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Loads dropped DLL 1 IoCs

pid	Process
4576	afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4576 set thread context of 220	4576	afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe	83

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
220	afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe
220	afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4576	afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4576 wrote to memory of 220	4576	afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe	83
PID 4576 wrote to memory of 220	4576	afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe	83
PID 4576 wrote to memory of 220	4576	afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe	83
PID 4576 wrote to memory of 220	4576	afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe	83

C:\Users\Admin\AppData\Local\Temp\afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe
"C:\Users\Admin\AppData\Local\Temp\afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4576
- C:\Users\Admin\AppData\Local\Temp\afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe
  "C:\Users\Admin\AppData\Local\Temp\afff63cf4baca4e2a5f58803754843aca7c75437c0cd7b0cb6b60efb72692fc9.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:220

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsaD3DC.tmp\uotvpo.dll

Filesize
89KB

MD5
76e2a4943339762fcd836ce964a8b297

SHA1
89c8b057f910076230aa4258a8ff464a259c599c

SHA256
eaea5b76bd62817395e8fba17d7c7ffb02061f32561862d50cbc454bc2547562

SHA512
9ff283886a2e34b5d9028eba4ea59ef39f46d725bb96ba1fa1169180f3d270d369b5124f3984225e4a4ee27a693ae2b2f40b1a335d5cf6a8b116ddc92cf4dd85

Download Submit
memory/220-140-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/220-141-0x0000000000A20000-0x0000000000D6A000-memory.dmp

Filesize
3.3MB

Download
memory/4576-139-0x00000000031D0000-0x00000000031D2000-memory.dmp

Filesize
8KB

Download