formbook | af03492db108628fc60b8f642ba3c5d1692ed7d4c94dba474c5b7f9e5c0ab121

General

Target

Payment_Advice.exe
Size

889KB
MD5

3a4b0695b3752747171249f731a42a0f
SHA1

472db8f1ad0121714b1c0692d050f055ee7117dc
SHA256

bd746ec7cac902a0b12f829efa801316f11b5ab6df024ff0f75c178134daad99
SHA512

a21fbc3d9c7c9c87ccab446ee7ec978826cadbe3faaa9fc6bb2fa07e4d5d9ecf7ea00de897ded2ff2452b951197f94d37d62e5d4d82e101eb1db7efaac4b26da
SSDEEP

12288:F5LfSgsVSj4s4IHK7zqcqpvYri3jZcYGnnwFN5pP0D+9uAw0OyVq/k:vQSksmPq7iK5pP0v0OAq/

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 2 IoCs

rat

resource	yara_rule
behavioral2/memory/2012-18-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/2012-23-0x0000000000400000-0x000000000042E000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	Payment_Advice.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1052 set thread context of 2012	1052	Payment_Advice.exe	101
PID 2012 set thread context of 3536	2012	Payment_Advice.exe	56
PID 2624 set thread context of 3536	2624	cmstp.exe	56

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	Payment_Advice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
4448	schtasks.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

pid	Process
2012	Payment_Advice.exe
2012	Payment_Advice.exe
2012	Payment_Advice.exe
2012	Payment_Advice.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe
2624	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2012	Payment_Advice.exe
2012	Payment_Advice.exe
2012	Payment_Advice.exe
2624	cmstp.exe
2624	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2012	Payment_Advice.exe
Token: SeDebugPrivilege	2624	cmstp.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1052 wrote to memory of 4448	1052	Payment_Advice.exe	99
PID 1052 wrote to memory of 4448	1052	Payment_Advice.exe	99
PID 1052 wrote to memory of 4448	1052	Payment_Advice.exe	99
PID 1052 wrote to memory of 2012	1052	Payment_Advice.exe	101
PID 1052 wrote to memory of 2012	1052	Payment_Advice.exe	101
PID 1052 wrote to memory of 2012	1052	Payment_Advice.exe	101
PID 1052 wrote to memory of 2012	1052	Payment_Advice.exe	101
PID 1052 wrote to memory of 2012	1052	Payment_Advice.exe	101
PID 1052 wrote to memory of 2012	1052	Payment_Advice.exe	101
PID 3536 wrote to memory of 2624	3536	Explorer.EXE	102
PID 3536 wrote to memory of 2624	3536	Explorer.EXE	102
PID 3536 wrote to memory of 2624	3536	Explorer.EXE	102
PID 2624 wrote to memory of 3428	2624	cmstp.exe	103
PID 2624 wrote to memory of 3428	2624	cmstp.exe	103
PID 2624 wrote to memory of 3428	2624	cmstp.exe	103

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3536
- C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
  "C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1052
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gBiomise" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5BA8.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4448
- - C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2012
- 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:2624
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5BA8.tmp

Filesize
1KB

MD5
6fbe7d7792e392e0fd733cbc52adf7f5

SHA1
cb756b1832419dc267ef1daab08036dd43de3082

SHA256
4bd629210baa71b563e1e3a0022f8880e5f77329e877ff35d80eee2be2623d40

SHA512
4159c344c319944b58f0cf665f2bfb230e1168d24098dfa2851b67a9140da5bae72f0ea052d473aef54536ecddd418d2c09fc6bfc80211d61c4caaf2e5fa0f53

Download Submit
memory/1052-12-0x0000000006600000-0x0000000006634000-memory.dmp

Filesize
208KB

Download
memory/1052-5-0x0000000004C40000-0x0000000004C4A000-memory.dmp

Filesize
40KB

Download
memory/1052-1-0x00000000000C0000-0x00000000001A4000-memory.dmp

Filesize
912KB

Download
memory/1052-4-0x0000000004CB0000-0x0000000004D42000-memory.dmp

Filesize
584KB

Download
memory/1052-8-0x0000000006010000-0x0000000006026000-memory.dmp

Filesize
88KB

Download
memory/1052-6-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/1052-7-0x0000000004D50000-0x0000000004DA6000-memory.dmp

Filesize
344KB

Download
memory/1052-20-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/1052-9-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

Filesize
4KB

Download
memory/1052-10-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/1052-11-0x0000000006800000-0x00000000068A2000-memory.dmp

Filesize
648KB

Download
memory/1052-0-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

Filesize
4KB

Download
memory/1052-3-0x00000000051C0000-0x0000000005764000-memory.dmp

Filesize
5.6MB

Download
memory/1052-2-0x0000000004B40000-0x0000000004BDC000-memory.dmp

Filesize
624KB

Download
memory/2012-18-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2012-21-0x00000000013E0000-0x000000000172A000-memory.dmp

Filesize
3.3MB

Download
memory/2012-24-0x00000000012F0000-0x0000000001304000-memory.dmp

Filesize
80KB

Download
memory/2012-23-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2624-26-0x0000000000EB0000-0x0000000000EC6000-memory.dmp

Filesize
88KB

Download
memory/2624-27-0x0000000000EB0000-0x0000000000EC6000-memory.dmp

Filesize
88KB

Download
memory/3536-25-0x00000000033D0000-0x00000000034D3000-memory.dmp

Filesize
1.0MB

Download
memory/3536-28-0x00000000033D0000-0x00000000034D3000-memory.dmp

Filesize
1.0MB

Download
memory/3536-32-0x0000000008A70000-0x0000000008C03000-memory.dmp

Filesize
1.6MB

Download
memory/3536-33-0x0000000008A70000-0x0000000008C03000-memory.dmp

Filesize
1.6MB

Download
memory/3536-35-0x0000000008A70000-0x0000000008C03000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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