formbook | 89b683855a2ab91c7224978cd42a844a864585d288bfe9620084c632192ba890

General

Target

PO_82_4000002414_XLS.exe
Size

805KB
MD5

85d7d1da8b13db9c318edb8e0ef6edcd
SHA1

d896eed6ed2dffaf9f7253b1642787b92e67f704
SHA256

765c1e7486aedffd7021ae5f15c86e549c7b796a5025249781f9c8a6327f4037
SHA512

eb82f6bf67635506b5fbcf4ea3b6e409152a54db8ba8d71c6272f88dcf16634c7cd75baaf68180c56a78209e9776a129f71d94a864c6a237663460933c05da52
SSDEEP

12288:vAOLPQXFuSL3DuSOYrPkjrV9jqd98+OXwUWT8oogIi1S01T:xLIXFukuSOfrqdLOyDj1R

Score

10^/10

formbook sdk discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

sdk

Decoy

mosquitobandidos.com

yisecurityfirst.com

faip777.icu

nc-tv.com

tifeeds.com

techlez.com

newalbanyironworks.com

shadent.store

therealworldtravel.com

cryptocoinminingpro.com

lobard.com

iamforexbots.com

cottnon.com

dandaanyar.com

browtopia.space

mo-diamond-mining.com

inteholistichealth.clinic

bhargavmistry.com

justgraceboutique.com

africanwomenabroad.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
behavioral2/memory/4992-14-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/4992-19-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/4992-23-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 5092 set thread context of 4992	5092	PO_82_4000002414_XLS.exe	92
PID 4992 set thread context of 3424	4992	PO_82_4000002414_XLS.exe	56
PID 4992 set thread context of 3424	4992	PO_82_4000002414_XLS.exe	56
PID 2632 set thread context of 3424	2632	cmstp.exe	56

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	PO_82_4000002414_XLS.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 49 IoCs

pid	Process
5092	PO_82_4000002414_XLS.exe
5092	PO_82_4000002414_XLS.exe
5092	PO_82_4000002414_XLS.exe
5092	PO_82_4000002414_XLS.exe
5092	PO_82_4000002414_XLS.exe
4992	PO_82_4000002414_XLS.exe
4992	PO_82_4000002414_XLS.exe
4992	PO_82_4000002414_XLS.exe
4992	PO_82_4000002414_XLS.exe
4992	PO_82_4000002414_XLS.exe
4992	PO_82_4000002414_XLS.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe
2632	cmstp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4992	PO_82_4000002414_XLS.exe
4992	PO_82_4000002414_XLS.exe
4992	PO_82_4000002414_XLS.exe
4992	PO_82_4000002414_XLS.exe
2632	cmstp.exe
2632	cmstp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5092	PO_82_4000002414_XLS.exe
Token: SeDebugPrivilege	4992	PO_82_4000002414_XLS.exe
Token: SeDebugPrivilege	2632	cmstp.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5092 wrote to memory of 1560	5092	PO_82_4000002414_XLS.exe	91
PID 5092 wrote to memory of 1560	5092	PO_82_4000002414_XLS.exe	91
PID 5092 wrote to memory of 1560	5092	PO_82_4000002414_XLS.exe	91
PID 5092 wrote to memory of 4992	5092	PO_82_4000002414_XLS.exe	92
PID 5092 wrote to memory of 4992	5092	PO_82_4000002414_XLS.exe	92
PID 5092 wrote to memory of 4992	5092	PO_82_4000002414_XLS.exe	92
PID 5092 wrote to memory of 4992	5092	PO_82_4000002414_XLS.exe	92
PID 5092 wrote to memory of 4992	5092	PO_82_4000002414_XLS.exe	92
PID 5092 wrote to memory of 4992	5092	PO_82_4000002414_XLS.exe	92
PID 3424 wrote to memory of 2632	3424	Explorer.EXE	93
PID 3424 wrote to memory of 2632	3424	Explorer.EXE	93
PID 3424 wrote to memory of 2632	3424	Explorer.EXE	93
PID 2632 wrote to memory of 4476	2632	cmstp.exe	94
PID 2632 wrote to memory of 4476	2632	cmstp.exe	94
PID 2632 wrote to memory of 4476	2632	cmstp.exe	94

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Users\Admin\AppData\Local\Temp\PO_82_4000002414_XLS.exe
  "C:\Users\Admin\AppData\Local\Temp\PO_82_4000002414_XLS.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5092
- - C:\Users\Admin\AppData\Local\Temp\PO_82_4000002414_XLS.exe
    "{path}"
    3⤵
    PID:1560
- - C:\Users\Admin\AppData\Local\Temp\PO_82_4000002414_XLS.exe
    "{path}"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4992
- 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:2632
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\PO_82_4000002414_XLS.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4476

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/2632-28-0x0000000000B60000-0x0000000000B76000-memory.dmp

Filesize
88KB

Download
memory/2632-27-0x0000000000B60000-0x0000000000B76000-memory.dmp

Filesize
88KB

Download
memory/3424-21-0x0000000002A50000-0x0000000002B5F000-memory.dmp

Filesize
1.1MB

Download
memory/3424-35-0x00000000086D0000-0x000000000885F000-memory.dmp

Filesize
1.6MB

Download
memory/3424-34-0x00000000086D0000-0x000000000885F000-memory.dmp

Filesize
1.6MB

Download
memory/3424-32-0x00000000086D0000-0x000000000885F000-memory.dmp

Filesize
1.6MB

Download
memory/3424-29-0x0000000002E60000-0x0000000002F7A000-memory.dmp

Filesize
1.1MB

Download
memory/3424-26-0x0000000002A50000-0x0000000002B5F000-memory.dmp

Filesize
1.1MB

Download
memory/3424-25-0x0000000002E60000-0x0000000002F7A000-memory.dmp

Filesize
1.1MB

Download
memory/4992-23-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4992-17-0x0000000001BA0000-0x0000000001EEA000-memory.dmp

Filesize
3.3MB

Download
memory/4992-24-0x00000000037B0000-0x00000000037C4000-memory.dmp

Filesize
80KB

Download
memory/4992-19-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4992-20-0x0000000001720000-0x0000000001734000-memory.dmp

Filesize
80KB

Download
memory/4992-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5092-16-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/5092-8-0x00000000060A0000-0x000000000613C000-memory.dmp

Filesize
624KB

Download
memory/5092-13-0x0000000009A00000-0x0000000009A7C000-memory.dmp

Filesize
496KB

Download
memory/5092-12-0x0000000007380000-0x000000000740E000-memory.dmp

Filesize
568KB

Download
memory/5092-9-0x0000000005780000-0x000000000578A000-memory.dmp

Filesize
40KB

Download
memory/5092-11-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/5092-0-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/5092-10-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/5092-7-0x00000000055D0000-0x00000000055DA000-memory.dmp

Filesize
40KB

Download
memory/5092-6-0x0000000005D40000-0x0000000006094000-memory.dmp

Filesize
3.3MB

Download
memory/5092-5-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/5092-4-0x0000000005420000-0x00000000054CA000-memory.dmp

Filesize
680KB

Download
memory/5092-3-0x0000000005280000-0x0000000005312000-memory.dmp

Filesize
584KB

Download
memory/5092-2-0x0000000005790000-0x0000000005D34000-memory.dmp

Filesize
5.6MB

Download
memory/5092-1-0x0000000000790000-0x0000000000860000-memory.dmp

Filesize
832KB

Download

Analysis

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