formbook | fdcd11dcd6a96d4ddfefaef7a186277e84c147fa7e33c0994b2deb384e8d0487

Analysis

max time kernel
146s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
25/03/2025, 21:10

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General

Target

AWB_Ref509428922pdf.exe
Size

633KB
MD5

573c3aa20cab92c93663f0e475323557
SHA1

647598a3a90b23787b83f0c23ba26a8b4b779592
SHA256

9ebea5ecb5f86bccf0564f563a35665876e5bcb1b66285a19965af5f24534b4a
SHA512

06fbf4dfea02ac62c81c9e47581d779891e2da9113ed45f349af2e4c52b86da9701a807872a5cfc059c5553de63bab3a24953a06a63d82cf8bf877c3dc538694
SSDEEP

6144:WTTzzJeyp1RnC7HJnIApeX9vLSaXmWFiB3WOk6f7h9WgFER0u+GIIIIIIIhIIIIw:GTzNeypHnC7HdeXZEWFTOk6fmBm5GV

Score

10^/10

formbook gt23 discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gt23

Decoy

awkeyesunspotsunfire.top

valbardrc.store

idadari29nice.makeup

haymu.shop

hybf2025.sbs

obbiny.xyz

dlecore.xyz

rabbeat.live

irelily.vip

oahnyn.shop

om-massfadq.top

lizalyn.work

irlo.shop

hostsolver.store

ylastpics.info

adfgt.xyz

cis.club

iskol.fun

riceflashradarlab.xyz

enovhojecnhi.shop

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/2852-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2852-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2576-26-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmstp.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\X8TPKTKHIBB = "C:\\Program Files (x86)\\Windows Media Player\\wmplayer.exe"	cmstp.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2668 set thread context of 2852	2668	AWB_Ref509428922pdf.exe	39
PID 2852 set thread context of 1244	2852	wmplayer.exe	21
PID 2576 set thread context of 1244	2576	cmstp.exe	21
PID 2576 set thread context of 2564	2576	cmstp.exe	38

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

System Location Discovery: System Language Discovery 1 TTPs 1 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	cmstp.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2703099537-420551529-3771253338-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
2852	wmplayer.exe
2852	wmplayer.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe

Suspicious behavior: MapViewOfSection 9 IoCs

pid	Process
2852	wmplayer.exe
2852	wmplayer.exe
2852	wmplayer.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe
2576	cmstp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2668	AWB_Ref509428922pdf.exe
Token: SeDebugPrivilege	2852	wmplayer.exe
Token: SeDebugPrivilege	2576	cmstp.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2768	2668	AWB_Ref509428922pdf.exe	30
PID 2668 wrote to memory of 2768	2668	AWB_Ref509428922pdf.exe	30
PID 2668 wrote to memory of 2768	2668	AWB_Ref509428922pdf.exe	30
PID 2668 wrote to memory of 2768	2668	AWB_Ref509428922pdf.exe	30
PID 2668 wrote to memory of 2768	2668	AWB_Ref509428922pdf.exe	30
PID 2668 wrote to memory of 2768	2668	AWB_Ref509428922pdf.exe	30
PID 2668 wrote to memory of 2816	2668	AWB_Ref509428922pdf.exe	31
PID 2668 wrote to memory of 2816	2668	AWB_Ref509428922pdf.exe	31
PID 2668 wrote to memory of 2816	2668	AWB_Ref509428922pdf.exe	31
PID 2668 wrote to memory of 2816	2668	AWB_Ref509428922pdf.exe	31
PID 2668 wrote to memory of 2940	2668	AWB_Ref509428922pdf.exe	32
PID 2668 wrote to memory of 2940	2668	AWB_Ref509428922pdf.exe	32
PID 2668 wrote to memory of 2940	2668	AWB_Ref509428922pdf.exe	32
PID 2668 wrote to memory of 2940	2668	AWB_Ref509428922pdf.exe	32
PID 2668 wrote to memory of 2680	2668	AWB_Ref509428922pdf.exe	33
PID 2668 wrote to memory of 2680	2668	AWB_Ref509428922pdf.exe	33
PID 2668 wrote to memory of 2680	2668	AWB_Ref509428922pdf.exe	33
PID 2668 wrote to memory of 2680	2668	AWB_Ref509428922pdf.exe	33
PID 2668 wrote to memory of 2680	2668	AWB_Ref509428922pdf.exe	33
PID 2668 wrote to memory of 2680	2668	AWB_Ref509428922pdf.exe	33
PID 2668 wrote to memory of 2652	2668	AWB_Ref509428922pdf.exe	34
PID 2668 wrote to memory of 2652	2668	AWB_Ref509428922pdf.exe	34
PID 2668 wrote to memory of 2652	2668	AWB_Ref509428922pdf.exe	34
PID 2668 wrote to memory of 2652	2668	AWB_Ref509428922pdf.exe	34
PID 2668 wrote to memory of 2652	2668	AWB_Ref509428922pdf.exe	34
PID 2668 wrote to memory of 2652	2668	AWB_Ref509428922pdf.exe	34
PID 2668 wrote to memory of 2788	2668	AWB_Ref509428922pdf.exe	35
PID 2668 wrote to memory of 2788	2668	AWB_Ref509428922pdf.exe	35
PID 2668 wrote to memory of 2788	2668	AWB_Ref509428922pdf.exe	35
PID 2668 wrote to memory of 2788	2668	AWB_Ref509428922pdf.exe	35
PID 2668 wrote to memory of 2788	2668	AWB_Ref509428922pdf.exe	35
PID 2668 wrote to memory of 1668	2668	AWB_Ref509428922pdf.exe	36
PID 2668 wrote to memory of 1668	2668	AWB_Ref509428922pdf.exe	36
PID 2668 wrote to memory of 1668	2668	AWB_Ref509428922pdf.exe	36
PID 2668 wrote to memory of 1668	2668	AWB_Ref509428922pdf.exe	36
PID 2668 wrote to memory of 1668	2668	AWB_Ref509428922pdf.exe	36
PID 2668 wrote to memory of 2804	2668	AWB_Ref509428922pdf.exe	37
PID 2668 wrote to memory of 2804	2668	AWB_Ref509428922pdf.exe	37
PID 2668 wrote to memory of 2804	2668	AWB_Ref509428922pdf.exe	37
PID 2668 wrote to memory of 2804	2668	AWB_Ref509428922pdf.exe	37
PID 2668 wrote to memory of 2804	2668	AWB_Ref509428922pdf.exe	37
PID 2668 wrote to memory of 2564	2668	AWB_Ref509428922pdf.exe	38
PID 2668 wrote to memory of 2564	2668	AWB_Ref509428922pdf.exe	38
PID 2668 wrote to memory of 2564	2668	AWB_Ref509428922pdf.exe	38
PID 2668 wrote to memory of 2564	2668	AWB_Ref509428922pdf.exe	38
PID 2668 wrote to memory of 2564	2668	AWB_Ref509428922pdf.exe	38
PID 2668 wrote to memory of 2852	2668	AWB_Ref509428922pdf.exe	39
PID 2668 wrote to memory of 2852	2668	AWB_Ref509428922pdf.exe	39
PID 2668 wrote to memory of 2852	2668	AWB_Ref509428922pdf.exe	39
PID 2668 wrote to memory of 2852	2668	AWB_Ref509428922pdf.exe	39
PID 2668 wrote to memory of 2852	2668	AWB_Ref509428922pdf.exe	39
PID 2668 wrote to memory of 2852	2668	AWB_Ref509428922pdf.exe	39
PID 2668 wrote to memory of 2852	2668	AWB_Ref509428922pdf.exe	39
PID 1244 wrote to memory of 2576	1244	Explorer.EXE	40
PID 1244 wrote to memory of 2576	1244	Explorer.EXE	40
PID 1244 wrote to memory of 2576	1244	Explorer.EXE	40
PID 1244 wrote to memory of 2576	1244	Explorer.EXE	40
PID 1244 wrote to memory of 2576	1244	Explorer.EXE	40
PID 1244 wrote to memory of 2576	1244	Explorer.EXE	40
PID 1244 wrote to memory of 2576	1244	Explorer.EXE	40
PID 2576 wrote to memory of 2512	2576	cmstp.exe	41
PID 2576 wrote to memory of 2512	2576	cmstp.exe	41
PID 2576 wrote to memory of 2512	2576	cmstp.exe	41
PID 2576 wrote to memory of 2512	2576	cmstp.exe	41

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Users\Admin\AppData\Local\Temp\AWB_Ref509428922pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\AWB_Ref509428922pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
    3⤵
    PID:2768
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
    3⤵
    PID:2816
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
    3⤵
    PID:2940
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    PID:2680
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
    3⤵
    PID:2652
- - C:\Windows\System32\calc.exe
    "C:\Windows\System32\calc.exe"
    3⤵
    PID:2788
- - C:\Windows\System32\svchost.exe
    "C:\Windows\System32\svchost.exe"
    3⤵
    PID:1668
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe"
    3⤵
    PID:2804
- - C:\Windows\System32\notepad.exe
    "C:\Windows\System32\notepad.exe"
    3⤵
    PID:2564
- - C:\Program Files (x86)\Windows Media Player\wmplayer.exe
    "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2852
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Adds policy Run key to start application
  - 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:2576
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1244-23-0x0000000007270000-0x000000000733F000-memory.dmp

Filesize
828KB

Download
memory/1244-30-0x0000000007270000-0x000000000733F000-memory.dmp

Filesize
828KB

Download
memory/2576-25-0x0000000000460000-0x0000000000478000-memory.dmp

Filesize
96KB

Download
memory/2576-24-0x0000000000460000-0x0000000000478000-memory.dmp

Filesize
96KB

Download
memory/2576-26-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/2768-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2768-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2852-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2852-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2852-19-0x0000000000980000-0x0000000000C83000-memory.dmp

Filesize
3.0MB

Download
memory/2852-22-0x0000000000200000-0x0000000000215000-memory.dmp

Filesize
84KB

Download
memory/2852-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download