formbook | 49c79037bcb2462b16066842101bb75b2dc35784d16d85eab3fff542bbfbd161

General

Target

Purchase order4756485.exe
Size

998KB
MD5

524421853f704a1290bbf12d849c47f2
SHA1

4f704d094fcabfaa9f4a73fbbfc9651bdd73406a
SHA256

876955f77a0817e4de8c1d5fddfc98d8fea616499f91757fb3ab7f2a6fdd1577
SHA512

5d41c258f21a61c6a8505546281018a294b98b34444963a0b05a375c99d92fa796599a4634dc28ebbdfff8248f170253c64d14226a04c1560d56b7c85b2d5eb1
SSDEEP

12288:XHAsJsJbuA1Rzdnuc9DjwjFDDKaog1h1PU+bthEJ2/FmD4EwCYyz5IDAjH:RaFuA1fucaBDK3a1PU+BcUg4zAjH

Score

10^/10

formbook crdi discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

crdi

Decoy

propertyjumpstartwebinar.com

boc-vip.club

polestarnyc.com

travelonlinebiz.com

bukovynaent.com

bestfashoin.com

miniindiastore.com

wehatebillgates.com

holmescountyjusticecourt.com

colectivorenovemosjuntos.com

houstowarehouse.com

aocsw.com

sml-uniform.com

bandanasaint.com

petposhdeluxe.com

ezcscpawq.com

ladiesoption.club

refixu.com

selfwrrrth.com

rovietry.com

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2600-15-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2600-19-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2764-26-0x0000000000090000-0x00000000000BE000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
1252	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2648 set thread context of 2600	2648	Purchase order4756485.exe	31
PID 2600 set thread context of 1160	2600	Purchase order4756485.exe	21
PID 2764 set thread context of 1160	2764	rundll32.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	Purchase order4756485.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2600	Purchase order4756485.exe
2600	Purchase order4756485.exe
2764	rundll32.exe
2764	rundll32.exe
2764	rundll32.exe
2764	rundll32.exe
2764	rundll32.exe
2764	rundll32.exe
2764	rundll32.exe
2764	rundll32.exe
2764	rundll32.exe
2764	rundll32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2600	Purchase order4756485.exe
2600	Purchase order4756485.exe
2600	Purchase order4756485.exe
2764	rundll32.exe
2764	rundll32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2648	Purchase order4756485.exe
Token: SeDebugPrivilege	2600	Purchase order4756485.exe
Token: SeDebugPrivilege	2764	rundll32.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 2600	2648	Purchase order4756485.exe	31
PID 2648 wrote to memory of 2600	2648	Purchase order4756485.exe	31
PID 2648 wrote to memory of 2600	2648	Purchase order4756485.exe	31
PID 2648 wrote to memory of 2600	2648	Purchase order4756485.exe	31
PID 2648 wrote to memory of 2600	2648	Purchase order4756485.exe	31
PID 2648 wrote to memory of 2600	2648	Purchase order4756485.exe	31
PID 2648 wrote to memory of 2600	2648	Purchase order4756485.exe	31
PID 1160 wrote to memory of 2764	1160	Explorer.EXE	32
PID 1160 wrote to memory of 2764	1160	Explorer.EXE	32
PID 1160 wrote to memory of 2764	1160	Explorer.EXE	32
PID 1160 wrote to memory of 2764	1160	Explorer.EXE	32
PID 1160 wrote to memory of 2764	1160	Explorer.EXE	32
PID 1160 wrote to memory of 2764	1160	Explorer.EXE	32
PID 1160 wrote to memory of 2764	1160	Explorer.EXE	32
PID 2764 wrote to memory of 1252	2764	rundll32.exe	33
PID 2764 wrote to memory of 1252	2764	rundll32.exe	33
PID 2764 wrote to memory of 1252	2764	rundll32.exe	33
PID 2764 wrote to memory of 1252	2764	rundll32.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1160
- C:\Users\Admin\AppData\Local\Temp\Purchase order4756485.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase order4756485.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2648
- - C:\Users\Admin\AppData\Local\Temp\Purchase order4756485.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase order4756485.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2600
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.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:2764
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Purchase order4756485.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:1252

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

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Downloads

memory/1160-21-0x0000000004BF0000-0x0000000004D29000-memory.dmp

Filesize
1.2MB

Download
memory/1160-27-0x0000000004BF0000-0x0000000004D29000-memory.dmp

Filesize
1.2MB

Download
memory/2600-19-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2600-10-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2600-20-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/2600-17-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/2600-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2600-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2600-9-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2648-7-0x00000000005A0000-0x00000000005DA000-memory.dmp

Filesize
232KB

Download
memory/2648-3-0x00000000003E0000-0x00000000003EA000-memory.dmp

Filesize
40KB

Download
memory/2648-6-0x0000000005130000-0x00000000051B2000-memory.dmp

Filesize
520KB

Download
memory/2648-16-0x0000000074910000-0x0000000074FFE000-memory.dmp

Filesize
6.9MB

Download
memory/2648-5-0x0000000074910000-0x0000000074FFE000-memory.dmp

Filesize
6.9MB

Download
memory/2648-4-0x000000007491E000-0x000000007491F000-memory.dmp

Filesize
4KB

Download
memory/2648-0-0x000000007491E000-0x000000007491F000-memory.dmp

Filesize
4KB

Download
memory/2648-2-0x0000000074910000-0x0000000074FFE000-memory.dmp

Filesize
6.9MB

Download
memory/2648-1-0x0000000000CE0000-0x0000000000DE0000-memory.dmp

Filesize
1024KB

Download
memory/2764-23-0x00000000006F0000-0x00000000006FE000-memory.dmp

Filesize
56KB

Download
memory/2764-22-0x00000000006F0000-0x00000000006FE000-memory.dmp

Filesize
56KB

Download
memory/2764-25-0x00000000006F0000-0x00000000006FE000-memory.dmp

Filesize
56KB

Download
memory/2764-26-0x0000000000090000-0x00000000000BE000-memory.dmp

Filesize
184KB

Download

Analysis

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