formbook | 3e47adc44ab8138a334d496761d54300dd54a8be85d57fcee07c0cf00ec675f8

General

Target

Inquiry.exe
Size

798KB
MD5

0b447963dc90968b1347008e33794a82
SHA1

f1a14274172348c9fc5fe91d7f687680d72497bc
SHA256

8b32acdc8173d7d80ebca1697b1bb6132f3d54a981141a982a3f9e95d5adc297
SHA512

eebce941706a5b11b3306587375ee04cc2ea107065c8a15809a1b9cb8f223dba6f4661824e21546fb77ee778b70fadcd4509f338811df0ab485f02ebddd184dc
SSDEEP

24576:jD4VHfQe6ZyWshg+qbZxTZZWunAWvysjg75HCek6ZFLENlg:hSsCieHLENq

Score

10^/10

formbook useb discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

useb

Decoy

houseofbooksae.net

ipjfeugo.xyz

sandiegowavefc.store

kamerynemehiel.com

herbalhealthalert.com

nfmedco.com

dorhop.com

bookingscenter.com

blaclyteproductions.com

novatel-network.com

locomotionprogramming.com

dotchocolatebars.com

rohanyat.online

a2detail.com

cotedazurpropertyforsale.com

space-vantage.space

averysanswers.com

lionheartimagery.com

nozincwadi.com

lovemyduck.com

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/2932-15-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2932-19-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2844-25-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
1548	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3032 set thread context of 2932	3032	Inquiry.exe	30
PID 2932 set thread context of 1180	2932	Inquiry.exe	21
PID 2844 set thread context of 1180	2844	cmstp.exe	21

System Location Discovery: System Language Discovery 1 TTPs 3 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	Inquiry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
3032	Inquiry.exe
3032	Inquiry.exe
2932	Inquiry.exe
2932	Inquiry.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe
2844	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2932	Inquiry.exe
2932	Inquiry.exe
2932	Inquiry.exe
2844	cmstp.exe
2844	cmstp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3032	Inquiry.exe
Token: SeDebugPrivilege	2932	Inquiry.exe
Token: SeDebugPrivilege	2844	cmstp.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2932	3032	Inquiry.exe	30
PID 3032 wrote to memory of 2932	3032	Inquiry.exe	30
PID 3032 wrote to memory of 2932	3032	Inquiry.exe	30
PID 3032 wrote to memory of 2932	3032	Inquiry.exe	30
PID 3032 wrote to memory of 2932	3032	Inquiry.exe	30
PID 3032 wrote to memory of 2932	3032	Inquiry.exe	30
PID 3032 wrote to memory of 2932	3032	Inquiry.exe	30
PID 1180 wrote to memory of 2844	1180	Explorer.EXE	31
PID 1180 wrote to memory of 2844	1180	Explorer.EXE	31
PID 1180 wrote to memory of 2844	1180	Explorer.EXE	31
PID 1180 wrote to memory of 2844	1180	Explorer.EXE	31
PID 1180 wrote to memory of 2844	1180	Explorer.EXE	31
PID 1180 wrote to memory of 2844	1180	Explorer.EXE	31
PID 1180 wrote to memory of 2844	1180	Explorer.EXE	31
PID 2844 wrote to memory of 1548	2844	cmstp.exe	32
PID 2844 wrote to memory of 1548	2844	cmstp.exe	32
PID 2844 wrote to memory of 1548	2844	cmstp.exe	32
PID 2844 wrote to memory of 1548	2844	cmstp.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Users\Admin\AppData\Local\Temp\Inquiry.exe
  "C:\Users\Admin\AppData\Local\Temp\Inquiry.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3032
- - C:\Users\Admin\AppData\Local\Temp\Inquiry.exe
    "C:\Users\Admin\AppData\Local\Temp\Inquiry.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2932
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2844
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Inquiry.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:1548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1180-22-0x0000000006EB0000-0x0000000007037000-memory.dmp

Filesize
1.5MB

Download
memory/1180-26-0x0000000006EB0000-0x0000000007037000-memory.dmp

Filesize
1.5MB

Download
memory/2844-25-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/2844-24-0x0000000000160000-0x0000000000178000-memory.dmp

Filesize
96KB

Download
memory/2844-23-0x0000000000160000-0x0000000000178000-memory.dmp

Filesize
96KB

Download
memory/2932-20-0x0000000000280000-0x0000000000294000-memory.dmp

Filesize
80KB

Download
memory/2932-17-0x0000000000BA0000-0x0000000000EA3000-memory.dmp

Filesize
3.0MB

Download
memory/2932-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2932-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2932-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2932-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2932-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3032-8-0x0000000002130000-0x0000000002172000-memory.dmp

Filesize
264KB

Download
memory/3032-16-0x0000000074B20000-0x000000007520E000-memory.dmp

Filesize
6.9MB

Download
memory/3032-6-0x0000000005AA0000-0x0000000005B16000-memory.dmp

Filesize
472KB

Download
memory/3032-0-0x0000000074B2E000-0x0000000074B2F000-memory.dmp

Filesize
4KB

Download
memory/3032-7-0x00000000009C0000-0x00000000009C6000-memory.dmp

Filesize
24KB

Download
memory/3032-5-0x0000000074B20000-0x000000007520E000-memory.dmp

Filesize
6.9MB

Download
memory/3032-4-0x0000000074B2E000-0x0000000074B2F000-memory.dmp

Filesize
4KB

Download
memory/3032-3-0x0000000000910000-0x000000000092A000-memory.dmp

Filesize
104KB

Download
memory/3032-2-0x0000000074B20000-0x000000007520E000-memory.dmp

Filesize
6.9MB

Download
memory/3032-1-0x0000000000AD0000-0x0000000000B9E000-memory.dmp

Filesize
824KB

Download

Analysis

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