formbook | 9f871875ab9d8e491042f763031d779a5168e7cdff65b4e9ce180331f6e7b36f

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
10/10/2023, 07:54

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General

Target

Wiprelyokcawpj.exe
Size

1.3MB
MD5

14239e8403667595f401b4971c28b3db
SHA1

9b1afe3640abcde93657ff00d7ccf91efb7e652c
SHA256

25c965edd039ebc00529a936e066f34149b4bb69c59c7a4fb575849584a71dda
SHA512

fa4f817274d8c81581e79454c43ff704d1017f0ea7017a8422d9c4e897810d5c1108047082fe325391ba580f823e2d954d81e7774231ede4cb621226d2738b55
SSDEEP

24576:vUrkF9ZT6xy9M7HCZmFq/wbgKcQrE/k2+gL5:vUwVk2XL

Score

10^/10

formbook modiloader fadc persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

fadc

Decoy

protechdream.com

faireco.life

bakrinhome.com

bustygirl.xyz

kbif.info

ningo.bond

hollywoodcircleevents.site

eapv-uabjo.com

852bets.com

nooption.online

global-strategy.pro

cartaonline.online

sacredbones2023.com

barsandbands.fun

liftchairs-info-mx.today

delamar.one

shuntianyuan.net

americanworldsolutions.com

julitv.net

criativax.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/2564-8-0x0000000004F30000-0x0000000005F30000-memory.dmp	formbook
behavioral2/memory/2564-12-0x0000000004F30000-0x0000000005F30000-memory.dmp	formbook
behavioral2/memory/1264-18-0x0000000000EC0000-0x0000000000EEF000-memory.dmp	formbook
behavioral2/memory/1264-20-0x0000000000EC0000-0x0000000000EEF000-memory.dmp	formbook

ModiLoader Second Stage 1 IoCs

resource	yara_rule
behavioral2/memory/4308-2-0x00000000042B0000-0x00000000052B0000-memory.dmp	modiloader_stage2

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Wiprelyo = "C:\\Users\\Public\\Wiprelyo.url"	Wiprelyokcawpj.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2564 set thread context of 3116	2564	colorcpl.exe	47
PID 1264 set thread context of 3116	1264	help.exe	47

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	24	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	33	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 56 IoCs

pid	Process
4308	Wiprelyokcawpj.exe
4308	Wiprelyokcawpj.exe
2564	colorcpl.exe
2564	colorcpl.exe
2564	colorcpl.exe
2564	colorcpl.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe
1264	help.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3116	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2564	colorcpl.exe
2564	colorcpl.exe
2564	colorcpl.exe
1264	help.exe
1264	help.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2564	colorcpl.exe
Token: SeShutdownPrivilege	3116	Explorer.EXE
Token: SeCreatePagefilePrivilege	3116	Explorer.EXE
Token: SeShutdownPrivilege	3116	Explorer.EXE
Token: SeCreatePagefilePrivilege	3116	Explorer.EXE
Token: SeDebugPrivilege	1264	help.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3116	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4308 wrote to memory of 2564	4308	Wiprelyokcawpj.exe	91
PID 4308 wrote to memory of 2564	4308	Wiprelyokcawpj.exe	91
PID 4308 wrote to memory of 2564	4308	Wiprelyokcawpj.exe	91
PID 4308 wrote to memory of 2564	4308	Wiprelyokcawpj.exe	91
PID 3116 wrote to memory of 1264	3116	Explorer.EXE	93
PID 3116 wrote to memory of 1264	3116	Explorer.EXE	93
PID 3116 wrote to memory of 1264	3116	Explorer.EXE	93
PID 1264 wrote to memory of 3840	1264	help.exe	94
PID 1264 wrote to memory of 3840	1264	help.exe	94
PID 1264 wrote to memory of 3840	1264	help.exe	94

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3116
- C:\Users\Admin\AppData\Local\Temp\Wiprelyokcawpj.exe
  "C:\Users\Admin\AppData\Local\Temp\Wiprelyokcawpj.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4308
- - C:\Windows\SysWOW64\colorcpl.exe
    C:\Windows\System32\colorcpl.exe
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2564
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:1984
- C:\Windows\SysWOW64\help.exe
  "C:\Windows\SysWOW64\help.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1264
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\colorcpl.exe"
    3⤵
    PID:3840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1264-16-0x00000000000E0000-0x00000000000E7000-memory.dmp

Filesize
28KB

Download
memory/1264-22-0x0000000001410000-0x00000000014A3000-memory.dmp

Filesize
588KB

Download
memory/1264-20-0x0000000000EC0000-0x0000000000EEF000-memory.dmp

Filesize
188KB

Download
memory/1264-19-0x0000000001630000-0x000000000197A000-memory.dmp

Filesize
3.3MB

Download
memory/1264-18-0x0000000000EC0000-0x0000000000EEF000-memory.dmp

Filesize
188KB

Download
memory/1264-17-0x00000000000E0000-0x00000000000E7000-memory.dmp

Filesize
28KB

Download
memory/2564-13-0x0000000017030000-0x0000000017044000-memory.dmp

Filesize
80KB

Download
memory/2564-12-0x0000000004F30000-0x0000000005F30000-memory.dmp

Filesize
16.0MB

Download
memory/2564-10-0x0000000017100000-0x000000001744A000-memory.dmp

Filesize
3.3MB

Download
memory/2564-8-0x0000000004F30000-0x0000000005F30000-memory.dmp

Filesize
16.0MB

Download
memory/3116-14-0x0000000008AA0000-0x0000000008BAF000-memory.dmp

Filesize
1.1MB

Download
memory/3116-23-0x0000000008BB0000-0x0000000008CF4000-memory.dmp

Filesize
1.3MB

Download
memory/3116-24-0x0000000008BB0000-0x0000000008CF4000-memory.dmp

Filesize
1.3MB

Download
memory/3116-26-0x0000000008BB0000-0x0000000008CF4000-memory.dmp

Filesize
1.3MB

Download
memory/4308-0-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/4308-5-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/4308-4-0x0000000000400000-0x0000000000548000-memory.dmp

Filesize
1.3MB

Download
memory/4308-2-0x00000000042B0000-0x00000000052B0000-memory.dmp

Filesize
16.0MB

Download
memory/4308-1-0x00000000042B0000-0x00000000052B0000-memory.dmp

Filesize
16.0MB

Download