formbook | e4bd5a51df8c1a437dda0ea6d067f61c897034f8e274e1cf1d1ffa5b931816c2

General

Target

DF20230706CFW07L.exe
Size

1.1MB
MD5

41a8e104259af538bf7743d979f9fc32
SHA1

f69fc5cb7a6401e345a5570e9041ba180faeaad5
SHA256

e4bd5a51df8c1a437dda0ea6d067f61c897034f8e274e1cf1d1ffa5b931816c2
SHA512

1ea7c153b93f4b9607e3e046dcf0bd270b0bc769417287c8edd6f421590e41cd871492ae738947d8a3122a3185a8805eac738c0d80ee18b0aceef8b2ce3acff0
SSDEEP

12288:JLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QNJPiDGJE1kDHrtr7PDrfrxolemd6vNB:NfmMv6Ckr7Mny5QNJK6JWEL1TOleme

Score

10^/10

formbook e62s discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

e62s

Decoy

ellinksa.shop

uckyspinph.xyz

owdark.net

arriage-therapy-72241.bond

w7ijko4rv4p97b.top

heirbuzzwords.buzz

aspart.shop

ctivemail5-kagoya-com.info

shacertification9.shop

zitcd65k3.buzz

llkosoi.info

ru8.info

rhgtrdjdjykyetrdjftd.buzz

yschoollist.kiwi

oftfolio.online

rograma-de-almacen-2.online

oudoarms.top

mwquas.xyz

orjagaucha.website

nlinechat-mh.online

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2664-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2664-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2836-12-0x00000000000C0000-0x00000000000EF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2796 set thread context of 2664	2796	DF20230706CFW07L.exe	30
PID 2664 set thread context of 1344	2664	svchost.exe	21
PID 2836 set thread context of 1344	2836	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	DF20230706CFW07L.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
2664	svchost.exe
2664	svchost.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe
2836	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2796	DF20230706CFW07L.exe
2664	svchost.exe
2664	svchost.exe
2664	svchost.exe
2836	chkdsk.exe
2836	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	svchost.exe
Token: SeDebugPrivilege	2836	chkdsk.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 2664	2796	DF20230706CFW07L.exe	30
PID 2796 wrote to memory of 2664	2796	DF20230706CFW07L.exe	30
PID 2796 wrote to memory of 2664	2796	DF20230706CFW07L.exe	30
PID 2796 wrote to memory of 2664	2796	DF20230706CFW07L.exe	30
PID 2796 wrote to memory of 2664	2796	DF20230706CFW07L.exe	30
PID 1344 wrote to memory of 2836	1344	Explorer.EXE	31
PID 1344 wrote to memory of 2836	1344	Explorer.EXE	31
PID 1344 wrote to memory of 2836	1344	Explorer.EXE	31
PID 1344 wrote to memory of 2836	1344	Explorer.EXE	31
PID 2836 wrote to memory of 2712	2836	chkdsk.exe	32
PID 2836 wrote to memory of 2712	2836	chkdsk.exe	32
PID 2836 wrote to memory of 2712	2836	chkdsk.exe	32
PID 2836 wrote to memory of 2712	2836	chkdsk.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1344
- C:\Users\Admin\AppData\Local\Temp\DF20230706CFW07L.exe
  "C:\Users\Admin\AppData\Local\Temp\DF20230706CFW07L.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\DF20230706CFW07L.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2664
- 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:2836
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2712

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/1344-8-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1344-9-0x0000000003E50000-0x0000000003F33000-memory.dmp

Filesize
908KB

Download
memory/1344-13-0x0000000003E50000-0x0000000003F33000-memory.dmp

Filesize
908KB

Download
memory/2664-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2664-4-0x0000000000880000-0x0000000000B83000-memory.dmp

Filesize
3.0MB

Download
memory/2664-7-0x0000000000260000-0x0000000000275000-memory.dmp

Filesize
84KB

Download
memory/2664-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2796-2-0x0000000003120000-0x0000000003520000-memory.dmp

Filesize
4.0MB

Download
memory/2836-10-0x0000000000240000-0x0000000000247000-memory.dmp

Filesize
28KB

Download
memory/2836-11-0x0000000000240000-0x0000000000247000-memory.dmp

Filesize
28KB

Download
memory/2836-12-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download

Analysis

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