formbook | ee66a185008549b9ca0c687a78aa6a69e4770dd12cab9dc63d5346c1f570904b

Resubmissions

12/03/2025, 21:32

250312-1dmynatxey 10

11/03/2025, 16:10

250311-tmgdxaxnx4 10

06/03/2025, 02:30

250306-cze8yav1az 10

Analysis

max time kernel
125s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2025, 02:30

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General

Target

4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe
Size

436KB
MD5

9284392fd96b31b3de8d8f664de3f0e4
SHA1

9b2e8d834a7e50ec7e674433d019dbd19996036c
SHA256

4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7
SHA512

61efcc329ba8f50c32de43ba0bfc66e6591158c12fcb095dfa3652e54fc799255a49e44c62f2022b807d51b432050f85d94a172dc0e186af40a21e3848c7c922
SSDEEP

6144:qrX0zvg3rjIxvuJMQzp5dVw4JAUvxWgFdgqwixiak3IfMRfkHYgV:iEDg33IpqU4JA61dgq2G74

Score

10^/10

formbook o4ms discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

o4ms

Decoy

fishingboatpub.com

trebor72.com

qualitycleanaustralia.com

amphilykenyx.com

jayte90.net

alveegrace.com

le-fleursoleil.com

volumoffer.com

businessbookwriters.com

alpin-art.com

firsttastetogo.com

catofc.com

ref-290.com

sbo2008.com

fortlauderdaleelevators.com

shanghaiyalian.com

majestybags.com

afcerd.com

myceliated.com

ls0a.com

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral10/memory/4072-7-0x0000000000580000-0x00000000005AE000-memory.dmp	formbook

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe

Executes dropped EXE 2 IoCs

pid	Process
3364	browse.exe
1532	browse.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1508 set thread context of 4072	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	92
PID 3364 set thread context of 1532	3364	browse.exe	115

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

System Information Discovery
T1082

Program crash 3 IoCs

pid	pid_target	Process	procid_target
1876	4072	WerFault.exe	92
1516	1532	WerFault.exe	115
3516	1532	WerFault.exe	115

System Location Discovery: System Language Discovery 1 TTPs 5 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	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	browse.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2868	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe
Token: SeDebugPrivilege	3364	browse.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 4072	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	92
PID 1508 wrote to memory of 4072	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	92
PID 1508 wrote to memory of 4072	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	92
PID 1508 wrote to memory of 4072	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	92
PID 1508 wrote to memory of 4072	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	92
PID 1508 wrote to memory of 4072	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	92
PID 1508 wrote to memory of 4112	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	109
PID 1508 wrote to memory of 4112	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	109
PID 1508 wrote to memory of 4112	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	109
PID 1508 wrote to memory of 3784	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	111
PID 1508 wrote to memory of 3784	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	111
PID 1508 wrote to memory of 3784	1508	4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe	111
PID 4112 wrote to memory of 2868	4112	cmd.exe	113
PID 4112 wrote to memory of 2868	4112	cmd.exe	113
PID 4112 wrote to memory of 2868	4112	cmd.exe	113
PID 3364 wrote to memory of 1532	3364	browse.exe	115
PID 3364 wrote to memory of 1532	3364	browse.exe	115
PID 3364 wrote to memory of 1532	3364	browse.exe	115
PID 3364 wrote to memory of 1532	3364	browse.exe	115
PID 3364 wrote to memory of 1532	3364	browse.exe	115
PID 3364 wrote to memory of 1532	3364	browse.exe	115

C:\Users\Admin\AppData\Local\Temp\4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe
"C:\Users\Admin\AppData\Local\Temp\4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Users\Admin\AppData\Local\Temp\4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe
  "C:\Users\Admin\AppData\Local\Temp\4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe"
  2⤵
  PID:4072
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4072 -s 184
    3⤵
    - Program crash
    PID:1876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\browse\browse.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4112
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\browse\browse.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7.exe" "C:\Users\Admin\AppData\Roaming\browse\browse.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4072 -ip 4072
1⤵
PID:1016

C:\Users\Admin\AppData\Roaming\browse\browse.exe
C:\Users\Admin\AppData\Roaming\browse\browse.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3364
- C:\Users\Admin\AppData\Roaming\browse\browse.exe
  "C:\Users\Admin\AppData\Roaming\browse\browse.exe"
  2⤵
  - Executes dropped EXE
  PID:1532
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1532 -s 180
    3⤵
    - Program crash
    PID:1516
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1532 -s 184
    3⤵
    - Program crash
    PID:3516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1532 -ip 1532
1⤵
PID:3796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1532 -ip 1532
1⤵
PID:3300

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\browse\browse.exe

Filesize
436KB

MD5
9284392fd96b31b3de8d8f664de3f0e4

SHA1
9b2e8d834a7e50ec7e674433d019dbd19996036c

SHA256
4f8799e5441c553ebbda342b6b06356a70dc432e5ac0434f4158146520b57ab7

SHA512
61efcc329ba8f50c32de43ba0bfc66e6591158c12fcb095dfa3652e54fc799255a49e44c62f2022b807d51b432050f85d94a172dc0e186af40a21e3848c7c922

Download Submit
memory/1508-6-0x00000000056F0000-0x00000000056FA000-memory.dmp

Filesize
40KB

Download
memory/1508-9-0x0000000074C6E000-0x0000000074C6F000-memory.dmp

Filesize
4KB

Download
memory/1508-2-0x00000000059F0000-0x0000000005F94000-memory.dmp

Filesize
5.6MB

Download
memory/1508-4-0x0000000005450000-0x00000000054B6000-memory.dmp

Filesize
408KB

Download
memory/1508-5-0x0000000074C60000-0x0000000075410000-memory.dmp

Filesize
7.7MB

Download
memory/1508-0-0x0000000074C6E000-0x0000000074C6F000-memory.dmp

Filesize
4KB

Download
memory/1508-1-0x0000000000980000-0x00000000009F2000-memory.dmp

Filesize
456KB

Download
memory/1508-3-0x0000000005350000-0x00000000053E2000-memory.dmp

Filesize
584KB

Download
memory/1508-10-0x0000000074C60000-0x0000000075410000-memory.dmp

Filesize
7.7MB

Download
memory/3364-15-0x0000000074C60000-0x0000000075410000-memory.dmp

Filesize
7.7MB

Download
memory/3364-16-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/3364-17-0x0000000074C60000-0x0000000075410000-memory.dmp

Filesize
7.7MB

Download
memory/3364-20-0x0000000074C60000-0x0000000075410000-memory.dmp

Filesize
7.7MB

Download
memory/4072-7-0x0000000000580000-0x00000000005AE000-memory.dmp

Filesize
184KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads