formbook | 502751e0b4a8acff074def25e8bf46495cc258100652ae11194aea84b5278fcf

Analysis

max time kernel
147s
max time network
152s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
29-11-2022 09:10

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General

Target

formbook4.exe
Size

1.0MB
MD5

e434c99075bb1cc365706ac25bc1c53a
SHA1

4cbc665703ef6c5eb46608aa5b8fef42c6afe6f5
SHA256

f50fd444e689593c2b29b62961986f31fe2b61f28850d23680aab7671add1365
SHA512

a6de56271d64f1ec3c4049faaeb99b7822f22b0acb6716a5ac52f7726d6278724d3110361cf13b63d441af01c3668dcde727a3ba322af17e00b33b0b0abb4610
SSDEEP

24576:bpxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxNuss8gPkS3k:23cj+/ZEFdj

Score

10^/10

formbook 5pdf rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

5pdf

Decoy

cnoOEQHsI9ejYIEif1HquIlIogYo8Ow=

+pAzTzDtpZpp

djD/KBrcDAYQyOGt+Us+fA==

EJM2X0tTvNKodx36

86lMWj8hSQvtqtamtDE6kbKCy3c=

/ywYVB9fxjhRAg==

0OZ0eaYoArZ0

Kl0MifS5n1TXmIQBZLE=

2eN+GpZbBAJDAg==

E8OdZbo7E5cuJgSu2JNUfg==

wXQeNSUaXiXts3xLPw==

PzLRe+HePPeJJB8PJw==

BPaaT7LANzqtcROc+Us+fA==

/vB5AHAzcWtvN1TtGCkZ2L47OjGmU8RrWQ==

gwSl0rcfM/O7hCE=

NrtIzTsH96xB8a3HBhbfMkCs

bxu1vLuDaipA5w0OVuBc8Mw=

2IRJAE05bSVR4Oj7UeBc8Mw=

kQuq4sSpB/7gs3xLPw==

iqhd2Ea725sBlSE=

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

formbook4.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Control Panel\International\Geo\Nation formbook4.exe
Loads dropped DLL 1 IoCs

Processes:

cmmon32.exe

pid process

1372 cmmon32.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Control Panel\International\Geo\Nation	formbook4.exe

pid	process
1372	cmmon32.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

formbook4.exeformbook4.execmmon32.exe

description	pid	process	target process
PID 1672 set thread context of 1488	1672	formbook4.exe	formbook4.exe
PID 1488 set thread context of 1236	1488	formbook4.exe	Explorer.EXE
PID 1372 set thread context of 1236	1372	cmmon32.exe	Explorer.EXE

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1820 schtasks.exe

pid	process
1820	schtasks.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmmon32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-4063495947-34355257-727531523-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

formbook4.exeformbook4.exepowershell.execmmon32.exe

pid	process
1672	formbook4.exe
1672	formbook4.exe
1488	formbook4.exe
1488	formbook4.exe
1488	formbook4.exe
1488	formbook4.exe
516	powershell.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1236 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

formbook4.execmmon32.exe

pid process

1488 formbook4.exe
1488 formbook4.exe
1488 formbook4.exe
1372 cmmon32.exe
1372 cmmon32.exe
1372 cmmon32.exe
1372 cmmon32.exe

pid	process
1236	Explorer.EXE

pid	process
1488	formbook4.exe
1488	formbook4.exe
1488	formbook4.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe
1372	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

formbook4.exeformbook4.exepowershell.execmmon32.exe

description	pid	process
Token: SeDebugPrivilege	1672	formbook4.exe
Token: SeDebugPrivilege	1488	formbook4.exe
Token: SeDebugPrivilege	516	powershell.exe
Token: SeDebugPrivilege	1372	cmmon32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1236 Explorer.EXE
1236 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1236 Explorer.EXE
1236 Explorer.EXE

pid	process
1236	Explorer.EXE
1236	Explorer.EXE

pid	process
1236	Explorer.EXE
1236	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

formbook4.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 1672 wrote to memory of 516	1672	formbook4.exe	powershell.exe
PID 1672 wrote to memory of 516	1672	formbook4.exe	powershell.exe
PID 1672 wrote to memory of 516	1672	formbook4.exe	powershell.exe
PID 1672 wrote to memory of 516	1672	formbook4.exe	powershell.exe
PID 1672 wrote to memory of 1820	1672	formbook4.exe	schtasks.exe
PID 1672 wrote to memory of 1820	1672	formbook4.exe	schtasks.exe
PID 1672 wrote to memory of 1820	1672	formbook4.exe	schtasks.exe
PID 1672 wrote to memory of 1820	1672	formbook4.exe	schtasks.exe
PID 1672 wrote to memory of 1488	1672	formbook4.exe	formbook4.exe
PID 1672 wrote to memory of 1488	1672	formbook4.exe	formbook4.exe
PID 1672 wrote to memory of 1488	1672	formbook4.exe	formbook4.exe
PID 1672 wrote to memory of 1488	1672	formbook4.exe	formbook4.exe
PID 1672 wrote to memory of 1488	1672	formbook4.exe	formbook4.exe
PID 1672 wrote to memory of 1488	1672	formbook4.exe	formbook4.exe
PID 1672 wrote to memory of 1488	1672	formbook4.exe	formbook4.exe
PID 1236 wrote to memory of 1372	1236	Explorer.EXE	cmmon32.exe
PID 1236 wrote to memory of 1372	1236	Explorer.EXE	cmmon32.exe
PID 1236 wrote to memory of 1372	1236	Explorer.EXE	cmmon32.exe
PID 1236 wrote to memory of 1372	1236	Explorer.EXE	cmmon32.exe
PID 1372 wrote to memory of 1572	1372	cmmon32.exe	Firefox.exe
PID 1372 wrote to memory of 1572	1372	cmmon32.exe	Firefox.exe
PID 1372 wrote to memory of 1572	1372	cmmon32.exe	Firefox.exe
PID 1372 wrote to memory of 1572	1372	cmmon32.exe	Firefox.exe
PID 1372 wrote to memory of 1572	1372	cmmon32.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Users\Admin\AppData\Local\Temp\formbook4.exe
  "C:\Users\Admin\AppData\Local\Temp\formbook4.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1672
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vwzBruALhhNkob.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:516
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vwzBruALhhNkob" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD402.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1820
- - C:\Users\Admin\AppData\Local\Temp\formbook4.exe
    "C:\Users\Admin\AppData\Local\Temp\formbook4.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1488
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2028
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:604
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1872
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1636
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1920
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1660
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1248
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1036
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1864
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1400
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:836
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1372
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1572

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD402.tmp

Filesize
1KB

MD5
af3b9437dbc76045d80c6baea7178fb9

SHA1
9ec400c8408ca57400fed85ab78324cc4efed95f

SHA256
780fd62a98ea8f77c50ff687290f90c9ee7a81fd5737455941a37ae56d3ee396

SHA512
12d21ca92026fb6cf5a62419858248a0ceb92ab0185a43585d4de1559b911299edf38f8b34dbc9ea0af0fae24354e6e08b8756291ab4e8bacc4636fa1756c7c8

Download Submit
\Users\Admin\AppData\Local\Temp\sqlite3.dll

Filesize
904KB

MD5
5e5ba61531d74e45b11cadb79e7394a1

SHA1
677224e14aac9dd35f367d5eb1704b36e69356b8

SHA256
99e91ae250c955bd403ec1a2321d6b11fcb715bdcc7cb3f63ffb46b349afde5c

SHA512
712bfe419ba97ecf0ec8323a68743013e8c767da9d986f74ab94d2a395c3086cac2a5823048e0022d3bbcebb55281b9e1f8c87fdc9295c70cc5521b57850bf46

Download Submit
memory/516-73-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download
memory/516-77-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download
memory/516-59-0x0000000000000000-mapping.dmp

Download
memory/1236-86-0x0000000006E60000-0x0000000006FAD000-memory.dmp

Filesize
1.3MB

Download
memory/1236-84-0x0000000006E60000-0x0000000006FAD000-memory.dmp

Filesize
1.3MB

Download
memory/1236-76-0x0000000005F70000-0x00000000060EE000-memory.dmp

Filesize
1.5MB

Download
memory/1372-78-0x0000000000000000-mapping.dmp

Download
memory/1372-79-0x0000000000B80000-0x0000000000B8D000-memory.dmp

Filesize
52KB

Download
memory/1372-85-0x00000000000D0000-0x00000000000FD000-memory.dmp

Filesize
180KB

Download
memory/1372-83-0x0000000000980000-0x0000000000A0F000-memory.dmp

Filesize
572KB

Download
memory/1372-81-0x0000000001F90000-0x0000000002293000-memory.dmp

Filesize
3.0MB

Download
memory/1372-80-0x00000000000D0000-0x00000000000FD000-memory.dmp

Filesize
180KB

Download
memory/1488-71-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1488-67-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1488-65-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1488-74-0x00000000008F0000-0x0000000000BF3000-memory.dmp

Filesize
3.0MB

Download
memory/1488-75-0x00000000000B0000-0x00000000000C0000-memory.dmp

Filesize
64KB

Download
memory/1488-68-0x00000000004012B0-mapping.dmp

Download
memory/1488-72-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/1488-70-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1488-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1672-54-0x0000000000DD0000-0x0000000000EDC000-memory.dmp

Filesize
1.0MB

Download
memory/1672-58-0x0000000000330000-0x00000000003BE000-memory.dmp

Filesize
568KB

Download
memory/1672-57-0x0000000000780000-0x000000000078C000-memory.dmp

Filesize
48KB

Download
memory/1672-63-0x0000000005150000-0x0000000005184000-memory.dmp

Filesize
208KB

Download
memory/1672-56-0x00000000004D0000-0x00000000004E8000-memory.dmp

Filesize
96KB

Download
memory/1672-55-0x0000000075111000-0x0000000075113000-memory.dmp

Filesize
8KB

Download
memory/1820-60-0x0000000000000000-mapping.dmp

Download