formbook | 56122070a3bdb1f168cbae330d58b9c268700509420d2670ccafd01221b45751

Analysis

max time kernel
151s
max time network
156s
platform
windows7_x64
resource
win7-20220715-en
resource tags

arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
submitted
25-07-2022 05:57

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General

Target

files/3.exe
Size

636KB
MD5

5e1e0f573490a4d5e3daed2b4ef597cf
SHA1

14a3833a1a3788f9869cfec18bf0f5e96fd6582b
SHA256

c6cc9eb1d60c3e355950bdd5e54f87f2d3536d6e36a6283d83fb218ef30c1801
SHA512

1e0193f1d422f1c6c85f0830221cebead9cffeb602ce91f4731d47ea84255c1cd6c2974d2c0f0d49d16fc77d2b9466a12e8d20bdd562c9cd99f9980662a604bd

Score

10^/10

formbook st0 persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

3.8

Campaign

st0

Decoy

link23.info

perfecto-intl.com

550194.top

ceoes.com

pill-sure.com

wakasan.info

momweed.biz

dmcee.com

lcltravels.com

onlinexhibition.com

lmdbshow.com

totamedia.com

unitedobth.com

twfitzone.com

whiteandbluemusic.com

businessbuh.site

mihalstkeowntrodquimp.win

jbcmarrakech.com

bbab1.com

realtec-project.com

Signatures

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

Formbook payload 5 IoCs

rat

resource	yara_rule
behavioral17/memory/1700-58-0x0000000000000000-mapping.dmp	formbook
behavioral17/memory/1700-60-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral17/memory/1700-61-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral17/memory/1264-68-0x00000000000C0000-0x00000000000EA000-memory.dmp	formbook
behavioral17/memory/1264-72-0x00000000000C0000-0x00000000000EA000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
1048	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	wininit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\XZKDV0Q8WR = "C:\\Program Files (x86)\\Nh48prpk\\updateajg.exe"	wininit.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1700 set thread context of 1396	1700	3.exe	16
PID 1264 set thread context of 1396	1264	wininit.exe	16

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Nh48prpk\updateajg.exe	wininit.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3440072777-2118400376-1759599358-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wininit.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1700	3.exe
1700	3.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe
1264	wininit.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1700	3.exe
1700	3.exe
1700	3.exe
1264	wininit.exe
1264	wininit.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1700	3.exe
Token: SeDebugPrivilege	1264	wininit.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1396	Explorer.EXE
1396	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1396	Explorer.EXE
1396	Explorer.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1832	3.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1832 wrote to memory of 1700	1832	3.exe	27
PID 1396 wrote to memory of 1264	1396	Explorer.EXE	28
PID 1396 wrote to memory of 1264	1396	Explorer.EXE	28
PID 1396 wrote to memory of 1264	1396	Explorer.EXE	28
PID 1396 wrote to memory of 1264	1396	Explorer.EXE	28
PID 1264 wrote to memory of 1048	1264	wininit.exe	29
PID 1264 wrote to memory of 1048	1264	wininit.exe	29
PID 1264 wrote to memory of 1048	1264	wininit.exe	29
PID 1264 wrote to memory of 1048	1264	wininit.exe	29

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Users\Admin\AppData\Local\Temp\files\3.exe
  "C:\Users\Admin\AppData\Local\Temp\files\3.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1832
- - C:\Users\Admin\AppData\Local\Temp\files\3.exe
    "C:\Users\Admin\AppData\Local\Temp\files\3.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1700
- C:\Windows\SysWOW64\wininit.exe
  "C:\Windows\SysWOW64\wininit.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1264
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\files\3.exe"
    3⤵
    - Deletes itself
    PID:1048

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\74L3N89Q\74Llogim.jpeg

Filesize
62KB

MD5
8de02fbe754465b91e3eab6a4df30a93

SHA1
0822856abba796afaeabeb94e52a1c82f2924519

SHA256
d9fda1384df02cef03266a81900c262bae22f5ddbface8dccb7c83325fe52771

SHA512
a235811b9703f9de243e8cc7a8a257e39f7b2f11f90aa986308fb49ab3cdecdc4ef441afaafec195fa508fd000651746445222894b51a67e32bdccab836032cc

Download Submit
C:\Users\Admin\AppData\Roaming\74L3N89Q\74Llogri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\74L3N89Q\74Llogrv.ini

Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/1264-72-0x00000000000C0000-0x00000000000EA000-memory.dmp

Filesize
168KB

Download
memory/1264-70-0x0000000001E10000-0x0000000001EA3000-memory.dmp

Filesize
588KB

Download
memory/1264-69-0x0000000001F40000-0x0000000002243000-memory.dmp

Filesize
3.0MB

Download
memory/1264-68-0x00000000000C0000-0x00000000000EA000-memory.dmp

Filesize
168KB

Download
memory/1264-67-0x00000000001F0000-0x000000000020A000-memory.dmp

Filesize
104KB

Download
memory/1396-71-0x0000000003DD0000-0x0000000003EAC000-memory.dmp

Filesize
880KB

Download
memory/1396-64-0x0000000006920000-0x0000000006A63000-memory.dmp

Filesize
1.3MB

Download
memory/1396-73-0x0000000003DD0000-0x0000000003EAC000-memory.dmp

Filesize
880KB

Download
memory/1700-63-0x0000000000340000-0x0000000000354000-memory.dmp

Filesize
80KB

Download
memory/1700-62-0x0000000000910000-0x0000000000C13000-memory.dmp

Filesize
3.0MB

Download
memory/1700-61-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1700-60-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1832-56-0x0000000075741000-0x0000000075743000-memory.dmp

Filesize
8KB

Download
memory/1832-59-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1832-57-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download