formbook | 308d2312635d080380f1239ea08a9c7fd06ec2329e06dcb45fe429a512829e27

General

Target

invddd.exe
Size

845KB
MD5

52fc6852320639e89579861ebe66696f
SHA1

eb36a28642f5b689f62048724423aec4c1eb0ba6
SHA256

5f0f26b3d51812df461e2c368c9a373099f54b62640564e7b06881a5d25a823b
SHA512

75cfe9889d81df0152d48c9a5a3b6b9c1bb608fb27bb98198abd57334d7d36ce437e6d2701644ec179058abec558e41e2d079cf3251efb45ec7104e6869d1b3d
SSDEEP

12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QLcl7YLGm86s10Y+H5N:ffmMv6Ckr7Mny5QLc9YzYCN

Score

10^/10

formbook cl21 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cl21

Decoy

0001.shop

earch-parttimejobs.today

are888.top

akanhaunthipped.shop

othing-heyu.xyz

cadvirsor.net

nclanalae.shop

lectric-cars-mexico.today

oxj-question.xyz

ersonalloanoffers.today

ersonalloans-fo54-fo37.click

verybody-ewfx.xyz

ercuremontauban.media

azilimdunyam.net

airs-clinicato.today

wiftsscend.click

ertainly-jbws.xyz

8xeng.app

damekadmitageable.cfd

ollapsedec.shop

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/2944-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2944-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2160-15-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2716 set thread context of 2944	2716	invddd.exe	30
PID 2944 set thread context of 1200	2944	svchost.exe	21
PID 2160 set thread context of 1200	2160	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 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	invddd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2944	svchost.exe
2944	svchost.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe
2160	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2716	invddd.exe
2944	svchost.exe
2944	svchost.exe
2944	svchost.exe
2160	chkdsk.exe
2160	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2944	svchost.exe
Token: SeDebugPrivilege	2160	chkdsk.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2716	invddd.exe
2716	invddd.exe
1200	Explorer.EXE
1200	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2716	invddd.exe
2716	invddd.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2944	2716	invddd.exe	30
PID 2716 wrote to memory of 2944	2716	invddd.exe	30
PID 2716 wrote to memory of 2944	2716	invddd.exe	30
PID 2716 wrote to memory of 2944	2716	invddd.exe	30
PID 2716 wrote to memory of 2944	2716	invddd.exe	30
PID 1200 wrote to memory of 2160	1200	Explorer.EXE	31
PID 1200 wrote to memory of 2160	1200	Explorer.EXE	31
PID 1200 wrote to memory of 2160	1200	Explorer.EXE	31
PID 1200 wrote to memory of 2160	1200	Explorer.EXE	31
PID 2160 wrote to memory of 2892	2160	chkdsk.exe	32
PID 2160 wrote to memory of 2892	2160	chkdsk.exe	32
PID 2160 wrote to memory of 2892	2160	chkdsk.exe	32
PID 2160 wrote to memory of 2892	2160	chkdsk.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\invddd.exe
  "C:\Users\Admin\AppData\Local\Temp\invddd.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2716
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\invddd.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2944
- 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:2160
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

Replay Monitor

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Downloads

memory/1200-16-0x0000000006C50000-0x0000000006DCC000-memory.dmp

Filesize
1.5MB

Download
memory/1200-11-0x0000000003F80000-0x0000000004080000-memory.dmp

Filesize
1024KB

Download
memory/1200-25-0x0000000007F10000-0x000000000807A000-memory.dmp

Filesize
1.4MB

Download
memory/1200-23-0x0000000007F10000-0x000000000807A000-memory.dmp

Filesize
1.4MB

Download
memory/1200-22-0x0000000007F10000-0x000000000807A000-memory.dmp

Filesize
1.4MB

Download
memory/1200-17-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1200-12-0x0000000006C50000-0x0000000006DCC000-memory.dmp

Filesize
1.5MB

Download
memory/2160-13-0x0000000000020000-0x0000000000027000-memory.dmp

Filesize
28KB

Download
memory/2160-14-0x0000000000020000-0x0000000000027000-memory.dmp

Filesize
28KB

Download
memory/2160-15-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/2716-5-0x00000000008C0000-0x00000000008C4000-memory.dmp

Filesize
16KB

Download
memory/2944-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2944-7-0x0000000000BF0000-0x0000000000EF3000-memory.dmp

Filesize
3.0MB

Download
memory/2944-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2944-10-0x00000000001C0000-0x00000000001D4000-memory.dmp

Filesize
80KB

Download

Analysis

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