formbook | 923fb5875b7bbde4321e8e9d4c010aa8851801bb5b099f2db795fa883c9c1e1f

General

Target

Ayu4oCFjm9OnXOp.exe
Size

432KB
MD5

f87c0f240f62b4cca561779d456a119b
SHA1

c56269f25c5c23b2e7061e3b13c3e0c3fd27f7f7
SHA256

d30712d30f67be6cc42c17e78032d44f858ba45aa58c767b756874e25f6938df
SHA512

4ec4be2b361bf4c9c009a6b2c3c4dbe5cc4dec31f17d5507708fa7ce5f704452d03ee97dab6ad0f52e9972c2f919e20d243e9ce945aeeeee09a02ee43e6a649c
SSDEEP

12288:LgQts9tXZ0ybmhFZ9lrzfyXHFD4j5HgXm2ijk:LgBX+Amh791yVs1k

Score

10^/10

formbook ajr discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ajr

Decoy

cokefork.com

sunsabe.com

tactical-milsim.com

johnporcaro.com

quantqubit.com

ehrbar2012.com

dailymoringpages.com

masteronlineteams.com

signocomunicaciones.com

entrepreneur-de-demain.com

eve-echoes-data.com

readingbythewindow.com

quoteshark.net

mundoeconomic.com

bootlegmask.com

sporkedmissoula.com

claricitywealthplanning.net

lyotrade.net

brandtokitchens.com

blackstorymedia.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/4660-18-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/4660-23-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/2016-28-0x0000000000970000-0x000000000099E000-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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	Ayu4oCFjm9OnXOp.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1132 set thread context of 4660	1132	Ayu4oCFjm9OnXOp.exe	103
PID 4660 set thread context of 3536	4660	Ayu4oCFjm9OnXOp.exe	56
PID 2016 set thread context of 3536	2016	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	Ayu4oCFjm9OnXOp.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
4168	schtasks.exe

Suspicious behavior: EnumeratesProcesses 39 IoCs

pid	Process
1132	Ayu4oCFjm9OnXOp.exe
4660	Ayu4oCFjm9OnXOp.exe
4660	Ayu4oCFjm9OnXOp.exe
4660	Ayu4oCFjm9OnXOp.exe
4660	Ayu4oCFjm9OnXOp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe
2016	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
4660	Ayu4oCFjm9OnXOp.exe
4660	Ayu4oCFjm9OnXOp.exe
4660	Ayu4oCFjm9OnXOp.exe
2016	cmstp.exe
2016	cmstp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1132	Ayu4oCFjm9OnXOp.exe
Token: SeDebugPrivilege	4660	Ayu4oCFjm9OnXOp.exe
Token: SeDebugPrivilege	2016	cmstp.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 4168	1132	Ayu4oCFjm9OnXOp.exe	101
PID 1132 wrote to memory of 4168	1132	Ayu4oCFjm9OnXOp.exe	101
PID 1132 wrote to memory of 4168	1132	Ayu4oCFjm9OnXOp.exe	101
PID 1132 wrote to memory of 4660	1132	Ayu4oCFjm9OnXOp.exe	103
PID 1132 wrote to memory of 4660	1132	Ayu4oCFjm9OnXOp.exe	103
PID 1132 wrote to memory of 4660	1132	Ayu4oCFjm9OnXOp.exe	103
PID 1132 wrote to memory of 4660	1132	Ayu4oCFjm9OnXOp.exe	103
PID 1132 wrote to memory of 4660	1132	Ayu4oCFjm9OnXOp.exe	103
PID 1132 wrote to memory of 4660	1132	Ayu4oCFjm9OnXOp.exe	103
PID 3536 wrote to memory of 2016	3536	Explorer.EXE	105
PID 3536 wrote to memory of 2016	3536	Explorer.EXE	105
PID 3536 wrote to memory of 2016	3536	Explorer.EXE	105
PID 2016 wrote to memory of 5080	2016	cmstp.exe	106
PID 2016 wrote to memory of 5080	2016	cmstp.exe	106
PID 2016 wrote to memory of 5080	2016	cmstp.exe	106

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3536
- C:\Users\Admin\AppData\Local\Temp\Ayu4oCFjm9OnXOp.exe
  "C:\Users\Admin\AppData\Local\Temp\Ayu4oCFjm9OnXOp.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1132
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VfaatlT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA776.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4168
- - C:\Users\Admin\AppData\Local\Temp\Ayu4oCFjm9OnXOp.exe
    "C:\Users\Admin\AppData\Local\Temp\Ayu4oCFjm9OnXOp.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4660
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2152
- 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:2016
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Ayu4oCFjm9OnXOp.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5080

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\tmpA776.tmp

Filesize
1KB

MD5
08c7fce284645c5a8a6e8fc88d496a2a

SHA1
61e23efd9937c4e9b64404f9e212b3d28987778d

SHA256
567b07d49d081a222d3ef50bccfd72e49cdb2658d108fda06beb073d78178197

SHA512
188bcfddba6c2a41701c5d3ceec41f61e7051b5f66212d561ba074942fb2cae7b5e0f18272560db0ceb63fae4a265f56493d60877668455aca925672343222a5

Download Submit
memory/1132-12-0x0000000006500000-0x0000000006536000-memory.dmp

Filesize
216KB

Download
memory/1132-3-0x0000000005970000-0x0000000005F14000-memory.dmp

Filesize
5.6MB

Download
memory/1132-1-0x0000000000900000-0x0000000000972000-memory.dmp

Filesize
456KB

Download
memory/1132-20-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/1132-6-0x0000000005660000-0x00000000056B6000-memory.dmp

Filesize
344KB

Download
memory/1132-5-0x0000000005420000-0x000000000542A000-memory.dmp

Filesize
40KB

Download
memory/1132-7-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/1132-8-0x0000000005630000-0x000000000563A000-memory.dmp

Filesize
40KB

Download
memory/1132-9-0x00000000750CE000-0x00000000750CF000-memory.dmp

Filesize
4KB

Download
memory/1132-10-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/1132-11-0x00000000064A0000-0x00000000064F6000-memory.dmp

Filesize
344KB

Download
memory/1132-0-0x00000000750CE000-0x00000000750CF000-memory.dmp

Filesize
4KB

Download
memory/1132-4-0x0000000005460000-0x00000000054F2000-memory.dmp

Filesize
584KB

Download
memory/1132-2-0x0000000005320000-0x00000000053BC000-memory.dmp

Filesize
624KB

Download
memory/2016-26-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/2016-27-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/2016-28-0x0000000000970000-0x000000000099E000-memory.dmp

Filesize
184KB

Download
memory/3536-36-0x00000000082D0000-0x0000000008461000-memory.dmp

Filesize
1.6MB

Download
memory/3536-25-0x0000000008130000-0x00000000082CE000-memory.dmp

Filesize
1.6MB

Download
memory/3536-29-0x0000000008130000-0x00000000082CE000-memory.dmp

Filesize
1.6MB

Download
memory/3536-33-0x00000000082D0000-0x0000000008461000-memory.dmp

Filesize
1.6MB

Download
memory/3536-34-0x00000000082D0000-0x0000000008461000-memory.dmp

Filesize
1.6MB

Download
memory/4660-21-0x00000000017A0000-0x0000000001AEA000-memory.dmp

Filesize
3.3MB

Download
memory/4660-24-0x0000000001210000-0x0000000001224000-memory.dmp

Filesize
80KB

Download
memory/4660-23-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4660-18-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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