formbook | 62e44671bc5246a9e8b973d24ae92e8df17c17bea451993f7baae05580e4d6bd

General

Target

PO__63537353636___IME JPEG.exe
Size

242KB
MD5

9e401b1980973e79bc19c1e3ffe174bc
SHA1

ee948ec25692949114b3cd2c10d48d17dd2c6ad9
SHA256

9d192f8239db65d0e6cbc8e080b2177e237f93cfd8b4a4065bf709ed3b69ac47
SHA512

843fb44ba636367a8f7fbf8ade609ac61103769c1850580ec6bea2f01862be54451d0cc3c6e3f4f6dabc6d02c334ae92c69f3d0c6dd0e43c051c3a418fa0f300
SSDEEP

6144:93vpQ10lPSHF3riXXNYgTdQDWThv2qwMHtkTXR2i+P9+ZA:FLEAvWutkTBvQ+ZA

Score

10^/10

formbook u2s7 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

u2s7

Decoy

mixso.site

rlagnin.com

imini.top

grapejulius.com

pkcomputer.online

surepolka.com

petahansen.com

rodriguezlawncare.net

oscartheelearning.ninja

gcubaang.top

learnserver.site

weddinginthehamptons.com

doctorverma.online

epicsx.com

signmole.shop

storetrade.store

htlenderschampionship.com

tigerexch-official.net

momentum6labs.com

safetyconsultants.sydney

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2280-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2280-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1520-21-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2516 set thread context of 2280	2516	PO__63537353636___IME JPEG.exe	31
PID 2280 set thread context of 1200	2280	Caspol.exe	21
PID 1520 set thread context of 1200	1520	cmstp.exe	21

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO__63537353636___IME JPEG.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3533259084-2542256011-65585152-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 33 IoCs

pid	Process
2516	PO__63537353636___IME JPEG.exe
2516	PO__63537353636___IME JPEG.exe
2280	Caspol.exe
2280	Caspol.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2280	Caspol.exe
2280	Caspol.exe
2280	Caspol.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe
1520	cmstp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	PO__63537353636___IME JPEG.exe
Token: SeDebugPrivilege	2280	Caspol.exe
Token: SeDebugPrivilege	1520	cmstp.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2488	2516	PO__63537353636___IME JPEG.exe	30
PID 2516 wrote to memory of 2488	2516	PO__63537353636___IME JPEG.exe	30
PID 2516 wrote to memory of 2488	2516	PO__63537353636___IME JPEG.exe	30
PID 2516 wrote to memory of 2488	2516	PO__63537353636___IME JPEG.exe	30
PID 2516 wrote to memory of 2280	2516	PO__63537353636___IME JPEG.exe	31
PID 2516 wrote to memory of 2280	2516	PO__63537353636___IME JPEG.exe	31
PID 2516 wrote to memory of 2280	2516	PO__63537353636___IME JPEG.exe	31
PID 2516 wrote to memory of 2280	2516	PO__63537353636___IME JPEG.exe	31
PID 2516 wrote to memory of 2280	2516	PO__63537353636___IME JPEG.exe	31
PID 2516 wrote to memory of 2280	2516	PO__63537353636___IME JPEG.exe	31
PID 2516 wrote to memory of 2280	2516	PO__63537353636___IME JPEG.exe	31
PID 1200 wrote to memory of 1520	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1520	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1520	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1520	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1520	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1520	1200	Explorer.EXE	32
PID 1200 wrote to memory of 1520	1200	Explorer.EXE	32
PID 1520 wrote to memory of 2648	1520	cmstp.exe	33
PID 1520 wrote to memory of 2648	1520	cmstp.exe	33
PID 1520 wrote to memory of 2648	1520	cmstp.exe	33
PID 1520 wrote to memory of 2648	1520	cmstp.exe	33
PID 1520 wrote to memory of 2648	1520	cmstp.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\PO__63537353636___IME JPEG.exe
  "C:\Users\Admin\AppData\Local\Temp\PO__63537353636___IME JPEG.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
    3⤵
    PID:2488
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2280
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1520
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2648

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1200-18-0x00000000050E0000-0x0000000005266000-memory.dmp

Filesize
1.5MB

Download
memory/1200-25-0x00000000050E0000-0x0000000005266000-memory.dmp

Filesize
1.5MB

Download
memory/1520-21-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/1520-19-0x0000000000890000-0x00000000008A8000-memory.dmp

Filesize
96KB

Download
memory/1520-20-0x0000000000890000-0x00000000008A8000-memory.dmp

Filesize
96KB

Download
memory/2280-17-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/2280-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2280-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2280-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2280-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2280-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2280-14-0x0000000000930000-0x0000000000C33000-memory.dmp

Filesize
3.0MB

Download
memory/2516-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

Filesize
4KB

Download
memory/2516-13-0x0000000074C40000-0x000000007532E000-memory.dmp

Filesize
6.9MB

Download
memory/2516-5-0x00000000004B0000-0x00000000004B8000-memory.dmp

Filesize
32KB

Download
memory/2516-4-0x00000000004A0000-0x00000000004AC000-memory.dmp

Filesize
48KB

Download
memory/2516-3-0x0000000074C40000-0x000000007532E000-memory.dmp

Filesize
6.9MB

Download
memory/2516-2-0x0000000000570000-0x00000000005AE000-memory.dmp

Filesize
248KB

Download
memory/2516-1-0x00000000010D0000-0x0000000001110000-memory.dmp

Filesize
256KB

Download

Analysis

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