formbook | 2f3766bd11570549f291b1c01fbf1e81805c2d072dbbd6ee26f2d9fd6dbcd8b7

General

Target

??????.exe
Size

1.1MB
MD5

e5d39dbcb30238929cf0ace419b207e8
SHA1

f5c499e26a082a97ab0c4f2fb8dba82f719a37be
SHA256

a27690306574d230791d1625c7657c8460a1ad5a3bc0187e28a7620f30da14fa
SHA512

52d1bff13ff64c514fd804887e034809023d23abf77ebf5b8aa04a12b4c6575f348925f76a82bc793167307e9775400eee2aedf5cf0e1b11b932da17bc4e89a3
SSDEEP

24576:+by9e8ItJePeyuFyVU7/78m9w9BxanVR5VVuj+olvm:+aOtJePe/Fyuf19w9BxIT5VVu+olO

Score

10^/10

formbook gn27 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gn27

Decoy

perilunevc.com

kantogaming.com

stageyor.online

jixsux.site

dingmei2020.icu

savagesupplyco.com

deadstockllc.com

leyandfey.com

zjn22558800.com

projectupskill.net

outliersresearch.com

spaced.community

zschengbangzx.com

5gxzxxtax-ety7f.biz

iq0xe.com

6388xp9xg9k.com

hengyungdzz.com

retrosale.com

echt.global

canceltotalav.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
behavioral1/memory/1740-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2740-25-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2724	powershell.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2264 set thread context of 1740	2264	______.exe	34
PID 1740 set thread context of 1184	1740	RegSvcs.exe	21
PID 2740 set thread context of 1184	2740	chkdsk.exe	21

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 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	______.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.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
2664	schtasks.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
2264	______.exe
2264	______.exe
1740	RegSvcs.exe
1740	RegSvcs.exe
2724	powershell.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe
2740	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1740	RegSvcs.exe
1740	RegSvcs.exe
1740	RegSvcs.exe
2740	chkdsk.exe
2740	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2264	______.exe
Token: SeDebugPrivilege	1740	RegSvcs.exe
Token: SeDebugPrivilege	2724	powershell.exe
Token: SeDebugPrivilege	2740	chkdsk.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 2724	2264	______.exe	30
PID 2264 wrote to memory of 2724	2264	______.exe	30
PID 2264 wrote to memory of 2724	2264	______.exe	30
PID 2264 wrote to memory of 2724	2264	______.exe	30
PID 2264 wrote to memory of 2664	2264	______.exe	31
PID 2264 wrote to memory of 2664	2264	______.exe	31
PID 2264 wrote to memory of 2664	2264	______.exe	31
PID 2264 wrote to memory of 2664	2264	______.exe	31
PID 2264 wrote to memory of 1740	2264	______.exe	34
PID 2264 wrote to memory of 1740	2264	______.exe	34
PID 2264 wrote to memory of 1740	2264	______.exe	34
PID 2264 wrote to memory of 1740	2264	______.exe	34
PID 2264 wrote to memory of 1740	2264	______.exe	34
PID 2264 wrote to memory of 1740	2264	______.exe	34
PID 2264 wrote to memory of 1740	2264	______.exe	34
PID 2264 wrote to memory of 1740	2264	______.exe	34
PID 2264 wrote to memory of 1740	2264	______.exe	34
PID 2264 wrote to memory of 1740	2264	______.exe	34
PID 1184 wrote to memory of 2740	1184	Explorer.EXE	35
PID 1184 wrote to memory of 2740	1184	Explorer.EXE	35
PID 1184 wrote to memory of 2740	1184	Explorer.EXE	35
PID 1184 wrote to memory of 2740	1184	Explorer.EXE	35
PID 2740 wrote to memory of 792	2740	chkdsk.exe	36
PID 2740 wrote to memory of 792	2740	chkdsk.exe	36
PID 2740 wrote to memory of 792	2740	chkdsk.exe	36
PID 2740 wrote to memory of 792	2740	chkdsk.exe	36

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Users\Admin\AppData\Local\Temp\______.exe
  "C:\Users\Admin\AppData\Local\Temp\______.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2264
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\AHPAQxU.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2724
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AHPAQxU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp84D9.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2664
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1740
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2740
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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\tmp84D9.tmp

Filesize
1KB

MD5
a9c7d49c800a83534066d95b9f142cec

SHA1
1c208f4a4fbdf6e04242a12786d9dd5757f9276b

SHA256
16c987332aa830b3f022b48b8c1667c1a1c42904fc3dc624920b8639ad753327

SHA512
50a9ffc49a22aaeed83f2d14db0f3891560ed8e18e4877654b3c6d72df25bde1ebe3ac20cf3221feb9f21faad7e9e6ab2fcec13ac11cc4ad35d86c7213164a39

Download Submit
memory/1184-23-0x0000000003B30000-0x0000000003C30000-memory.dmp

Filesize
1024KB

Download
memory/1740-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1740-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1740-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1740-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2264-4-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/2264-6-0x0000000005990000-0x0000000005A8E000-memory.dmp

Filesize
1016KB

Download
memory/2264-12-0x0000000002330000-0x0000000002364000-memory.dmp

Filesize
208KB

Download
memory/2264-5-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2264-0-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/2264-3-0x00000000004F0000-0x0000000000508000-memory.dmp

Filesize
96KB

Download
memory/2264-2-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2264-21-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2264-1-0x00000000003C0000-0x00000000004E6000-memory.dmp

Filesize
1.1MB

Download
memory/2740-24-0x0000000000300000-0x0000000000307000-memory.dmp

Filesize
28KB

Download
memory/2740-25-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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