formbook | 02b204ba87df105bf1d2c6fcd3fdadfe8af648b832ade537306d3fb070d5471c

General

Target

Swift Document/Swift.exe
Size

650KB
MD5

ef3338a3b8a2ceada139c407bef9988a
SHA1

953b63712fa2d92f11dcd15df323373a80dff168
SHA256

5e4f25c393d72fd8869caba599e287fedfea84da53e37da77da60dc7f52fcdf7
SHA512

cf375dfc96fcba23763244a29e8a0cc8ad5a3cfb095e34c827bfb4aa7bfb3aa2d8d2a50f9f14f3bad5ece09691f47e57769a5bf3fb16fe2031afdb885b5fc92b
SSDEEP

12288:kxqeeZE2ztZjw1WoF9vV64KswzGSjsZc769k:kx0ZMWyN/rw6SgK6W

Score

10^/10

formbook chu20 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

3.8

Campaign

chu20

Decoy

resumetype.com

granitewealthpartners.info

fromagic.com

pinholetechnik-muenchen.com

lmwords.com

enjoynaturo.com

consultoriabtc.com

zerocredithelp.online

zhenleju.com

wifeandmomlife.com

meandyouandeveryone.com

yingercheshop.com

jianyetaoke.com

goiser.info

davisterritory.net

bestrentsplus.net

itf-servers.com

meetingsumo.com

rebelcorvettes.com

autoblade.net

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2848-7-0x00000000031E0000-0x0000000003320000-memory.dmp	formbook
behavioral1/memory/2848-4-0x00000000031E0000-0x0000000003320000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2576	cmd.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2848 set thread context of 1236	2848	Swift.exe	21
PID 2556 set thread context of 1236	2556	explorer.exe	21

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Swift.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	Swift.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	Swift.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
2848	Swift.exe
2848	Swift.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe
2556	explorer.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2848	Swift.exe
2848	Swift.exe
2848	Swift.exe
2556	explorer.exe
2556	explorer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2848	Swift.exe
Token: SeDebugPrivilege	2556	explorer.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1236 wrote to memory of 2556	1236	Explorer.EXE	31
PID 1236 wrote to memory of 2556	1236	Explorer.EXE	31
PID 1236 wrote to memory of 2556	1236	Explorer.EXE	31
PID 1236 wrote to memory of 2556	1236	Explorer.EXE	31
PID 2556 wrote to memory of 2576	2556	explorer.exe	32
PID 2556 wrote to memory of 2576	2556	explorer.exe	32
PID 2556 wrote to memory of 2576	2556	explorer.exe	32
PID 2556 wrote to memory of 2576	2556	explorer.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Users\Admin\AppData\Local\Temp\Swift Document\Swift.exe
  "C:\Users\Admin\AppData\Local\Temp\Swift Document\Swift.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:2848
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.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:2556
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Swift Document\Swift.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1236-9-0x00000000071C0000-0x00000000072E8000-memory.dmp

Filesize
1.2MB

Download
memory/1236-13-0x00000000071C0000-0x00000000072E8000-memory.dmp

Filesize
1.2MB

Download
memory/1236-8-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/2556-11-0x0000000000E80000-0x0000000001101000-memory.dmp

Filesize
2.5MB

Download
memory/2556-12-0x0000000000E80000-0x0000000001101000-memory.dmp

Filesize
2.5MB

Download
memory/2848-7-0x00000000031E0000-0x0000000003320000-memory.dmp

Filesize
1.2MB

Download
memory/2848-0-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2848-4-0x00000000031E0000-0x0000000003320000-memory.dmp

Filesize
1.2MB

Download
memory/2848-5-0x00000000035F0000-0x00000000038F3000-memory.dmp

Filesize
3.0MB

Download
memory/2848-10-0x0000000000400000-0x000000000059E000-memory.dmp

Filesize
1.6MB

Download
memory/2848-6-0x0000000003900000-0x0000000003914000-memory.dmp

Filesize
80KB

Download
memory/2848-1-0x0000000000400000-0x000000000059E000-memory.dmp

Filesize
1.6MB

Download
memory/2848-2-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing