formbook | b669035dc037386464387492db9364dba2e352aa52b5c4bfcade45c2d784b41b

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 15:56

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General

Target

DFI-6059.exe
Size

406KB
MD5

69a1012645e68ec71f61e3e623cc1802
SHA1

e9c94760b171eb223d28e66ac67e3fc50d1494df
SHA256

37cea6e5502e8caea195462fdb59b168d238617f2918f0562804f8e6bd2cd9d0
SHA512

b03906bb2a280f1609f5ed5d22116d238e5dc88b8f85ffe0cba99a4391265c457c08fe2d1adad2dd006115828bf530c32ace6e097b4d23fd7c9054c758cbc912
SSDEEP

6144:aJZj3XBjlkq27zgxRb01xJIdtNMlY0u0UC7lYA7C:+zZo7cvb0Jq0PL72Am

Score

10^/10

formbook dmr discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dmr

Decoy

thietkewebngay.com

fdgre.com

silverbuzzer.com

d55105.com

ccc693.com

diptya.net

oleasalon.com

vjvtjkic.biz

edmsociety.com

siyahmaske.win

lmnp-occasion.com

platocosmos.com

fakua.top

albertabarricade.com

kakaninrecipes.com

bestsmokeapp.com

hotelsitaly.online

brewtopiaapp.com

1q1twoother.men

wwwmaharashtratimes.com

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/3704-424-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/3704-430-0x0000000000400000-0x000000000042D000-memory.dmp	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	DFI-6059.exe

Executes dropped EXE 2 IoCs

pid	Process
3640	osign.exe
3704	AddInProcess32.exe

Loads dropped DLL 2 IoCs

pid	Process
640	DFI-6059.exe
3640	osign.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sobm = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\osign.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3640 set thread context of 3704	3640	osign.exe	95
PID 3704 set thread context of 3588	3704	AddInProcess32.exe	56
PID 3464 set thread context of 3588	3464	raserver.exe	56

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 6 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	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	osign.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	raserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DFI-6059.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 43 IoCs

pid	Process
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
640	DFI-6059.exe
3640	osign.exe
3704	AddInProcess32.exe
3704	AddInProcess32.exe
3704	AddInProcess32.exe
3704	AddInProcess32.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe
3464	raserver.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3704	AddInProcess32.exe
3704	AddInProcess32.exe
3704	AddInProcess32.exe
3464	raserver.exe
3464	raserver.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	640	DFI-6059.exe
Token: SeDebugPrivilege	3640	osign.exe
Token: SeDebugPrivilege	3704	AddInProcess32.exe
Token: SeDebugPrivilege	3464	raserver.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 2284	640	DFI-6059.exe	89
PID 640 wrote to memory of 2284	640	DFI-6059.exe	89
PID 640 wrote to memory of 2284	640	DFI-6059.exe	89
PID 2284 wrote to memory of 1068	2284	cmd.exe	91
PID 2284 wrote to memory of 1068	2284	cmd.exe	91
PID 2284 wrote to memory of 1068	2284	cmd.exe	91
PID 640 wrote to memory of 3640	640	DFI-6059.exe	94
PID 640 wrote to memory of 3640	640	DFI-6059.exe	94
PID 640 wrote to memory of 3640	640	DFI-6059.exe	94
PID 3640 wrote to memory of 3704	3640	osign.exe	95
PID 3640 wrote to memory of 3704	3640	osign.exe	95
PID 3640 wrote to memory of 3704	3640	osign.exe	95
PID 3640 wrote to memory of 3704	3640	osign.exe	95
PID 3640 wrote to memory of 3704	3640	osign.exe	95
PID 3640 wrote to memory of 3704	3640	osign.exe	95
PID 3588 wrote to memory of 3464	3588	Explorer.EXE	96
PID 3588 wrote to memory of 3464	3588	Explorer.EXE	96
PID 3588 wrote to memory of 3464	3588	Explorer.EXE	96
PID 3464 wrote to memory of 3404	3464	raserver.exe	97
PID 3464 wrote to memory of 3404	3464	raserver.exe	97
PID 3464 wrote to memory of 3404	3464	raserver.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Users\Admin\AppData\Local\Temp\DFI-6059.exe
  "C:\Users\Admin\AppData\Local\Temp\DFI-6059.exe"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:640
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v sobm /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\osign.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2284
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v sobm /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\osign.exe"
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:1068
- - C:\Users\Admin\osign.exe
    "C:\Users\Admin\osign.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3640
  - - C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
      "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:3704
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.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:3464
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

Filesize
42KB

MD5
9827ff3cdf4b83f9c86354606736ca9c

SHA1
e73d73f42bb2a310f03eb1bcbb22be2b8eb7c723

SHA256
c1cf3dc8fa1c7fc00f88e07ad539979b3706ca8d69223cffd1d58bc8f521f63a

SHA512
8261828d55f3b5134c0aeb98311c04e20c5395d4347251746f3be0fb854f36cc7e118713cd00c9867537e6e47d5e71f2b2384fc00c67f0ae1b285b8310321579

Download Submit
C:\Users\Admin\AppData\Local\Temp\a6a0b8a6-4761-4357-9a31-0eca6ad70093\f.dll

Filesize
94KB

MD5
14ff402962ad21b78ae0b4c43cd1f194

SHA1
f8a510eb26666e875a5bdd1cadad40602763ad72

SHA256
fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

SHA512
daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

Download Submit
C:\Users\Admin\osign.exe

Filesize
406KB

MD5
69a1012645e68ec71f61e3e623cc1802

SHA1
e9c94760b171eb223d28e66ac67e3fc50d1494df

SHA256
37cea6e5502e8caea195462fdb59b168d238617f2918f0562804f8e6bd2cd9d0

SHA512
b03906bb2a280f1609f5ed5d22116d238e5dc88b8f85ffe0cba99a4391265c457c08fe2d1adad2dd006115828bf530c32ace6e097b4d23fd7c9054c758cbc912

Download Submit
memory/640-0-0x000000007527E000-0x000000007527F000-memory.dmp

Filesize
4KB

Download
memory/640-1-0x0000000000840000-0x00000000008AC000-memory.dmp

Filesize
432KB

Download
memory/640-2-0x0000000075270000-0x0000000075A20000-memory.dmp

Filesize
7.7MB

Download
memory/640-3-0x0000000002D00000-0x0000000002D2C000-memory.dmp

Filesize
176KB

Download
memory/640-4-0x0000000005710000-0x0000000005CB4000-memory.dmp

Filesize
5.6MB

Download
memory/640-5-0x0000000005160000-0x00000000051A4000-memory.dmp

Filesize
272KB

Download
memory/640-6-0x0000000005250000-0x00000000052E2000-memory.dmp

Filesize
584KB

Download
memory/640-62-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-14-0x0000000073D00000-0x0000000073D89000-memory.dmp

Filesize
548KB

Download
memory/640-76-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-74-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-72-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-70-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-68-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-66-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-64-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-60-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-58-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-57-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-55-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-52-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-50-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-48-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-46-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-44-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-42-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-40-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-38-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-36-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-34-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-32-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-30-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-28-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-26-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-24-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-22-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-20-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-18-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-16-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-15-0x0000000002D00000-0x0000000002D25000-memory.dmp

Filesize
148KB

Download
memory/640-195-0x000000007527E000-0x000000007527F000-memory.dmp

Filesize
4KB

Download
memory/640-196-0x0000000075270000-0x0000000075A20000-memory.dmp

Filesize
7.7MB

Download
memory/640-197-0x0000000075270000-0x0000000075A20000-memory.dmp

Filesize
7.7MB

Download
memory/640-199-0x0000000075270000-0x0000000075A20000-memory.dmp

Filesize
7.7MB

Download
memory/640-231-0x0000000075270000-0x0000000075A20000-memory.dmp

Filesize
7.7MB

Download
memory/3640-230-0x0000000075270000-0x0000000075A20000-memory.dmp

Filesize
7.7MB

Download
memory/3640-232-0x0000000075270000-0x0000000075A20000-memory.dmp

Filesize
7.7MB

Download
memory/3640-416-0x0000000075270000-0x0000000075A20000-memory.dmp

Filesize
7.7MB

Download
memory/3640-417-0x0000000075270000-0x0000000075A20000-memory.dmp

Filesize
7.7MB

Download
memory/3640-418-0x0000000075270000-0x0000000075A20000-memory.dmp

Filesize
7.7MB

Download
memory/3640-419-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

Filesize
48KB

Download
memory/3640-425-0x0000000075270000-0x0000000075A20000-memory.dmp

Filesize
7.7MB

Download
memory/3704-424-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/3704-426-0x0000000001620000-0x000000000196A000-memory.dmp

Filesize
3.3MB

Download
memory/3704-430-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download