formbook | 3e9f3a83f830c41cfec094e86c31a8c79c032814a4f029eba014cf90b7db75ab

General

Target

MalwareBazaar.exe
Size

615KB
MD5

1cc3edbb74f2ee6d727579c246057f95
SHA1

2e7ee47afb0752c640b598f5bb7efada674af88d
SHA256

3e9f3a83f830c41cfec094e86c31a8c79c032814a4f029eba014cf90b7db75ab
SHA512

4fd715f9487daba8cfe32f4463cc675cf681a1377a2c1d097d74aa8bf63c54cd8f510761b4d49d6259ae315ab66670684b216d4d6217cd0a4cd5925cf3123de4
SSDEEP

12288:NeFFFFFFFF6VxOpnAArP4R1PiXQF7wxqMrI3NL/P9IqeiT/ihYWZRvYZo+5oK:NeFFFFFFFF6VwaArwRA+wgMr6lP93eiF

Score

10^/10

formbook sy52 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

sy52

Decoy

wxxj.asia

emu-oil.online

theprogressiontalks.com

saigonvape.com

cb257.pro

inucana.com

xn--pdr89n.vip

vtc.bzh

connexionsink.com

mastersofthevibes.com

mallsetuae.shop

bellaandbling.com

wagi88.one

273618.bid

japanvietnam-mall.com

lkd1t.rest

oflgjgiq.xyz

calliblography.com

idz8u.vip

marrybears.com

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2764-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2764-15-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2532-21-0x0000000000110000-0x000000000013F000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2660	powershell.exe

Deletes itself 1 IoCs

pid	Process
3012	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 808 set thread context of 2764	808	MalwareBazaar.exe	32
PID 2764 set thread context of 1184	2764	MalwareBazaar.exe	21
PID 2532 set thread context of 1184	2532	chkdsk.exe	21

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 4 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	MalwareBazaar.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
808	MalwareBazaar.exe
808	MalwareBazaar.exe
2764	MalwareBazaar.exe
2764	MalwareBazaar.exe
2660	powershell.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe
2532	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2764	MalwareBazaar.exe
2764	MalwareBazaar.exe
2764	MalwareBazaar.exe
2532	chkdsk.exe
2532	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	808	MalwareBazaar.exe
Token: SeDebugPrivilege	2764	MalwareBazaar.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	2532	chkdsk.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 808 wrote to memory of 2660	808	MalwareBazaar.exe	30
PID 808 wrote to memory of 2660	808	MalwareBazaar.exe	30
PID 808 wrote to memory of 2660	808	MalwareBazaar.exe	30
PID 808 wrote to memory of 2660	808	MalwareBazaar.exe	30
PID 808 wrote to memory of 2764	808	MalwareBazaar.exe	32
PID 808 wrote to memory of 2764	808	MalwareBazaar.exe	32
PID 808 wrote to memory of 2764	808	MalwareBazaar.exe	32
PID 808 wrote to memory of 2764	808	MalwareBazaar.exe	32
PID 808 wrote to memory of 2764	808	MalwareBazaar.exe	32
PID 808 wrote to memory of 2764	808	MalwareBazaar.exe	32
PID 808 wrote to memory of 2764	808	MalwareBazaar.exe	32
PID 1184 wrote to memory of 2532	1184	Explorer.EXE	33
PID 1184 wrote to memory of 2532	1184	Explorer.EXE	33
PID 1184 wrote to memory of 2532	1184	Explorer.EXE	33
PID 1184 wrote to memory of 2532	1184	Explorer.EXE	33
PID 2532 wrote to memory of 3012	2532	chkdsk.exe	34
PID 2532 wrote to memory of 3012	2532	chkdsk.exe	34
PID 2532 wrote to memory of 3012	2532	chkdsk.exe	34
PID 2532 wrote to memory of 3012	2532	chkdsk.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
  "C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:808
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2660
- - C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
    "C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2764
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2532
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:3012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

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/808-11-0x0000000074170000-0x000000007485E000-memory.dmp

Filesize
6.9MB

Download
memory/808-1-0x0000000000FA0000-0x0000000001040000-memory.dmp

Filesize
640KB

Download
memory/808-2-0x0000000074170000-0x000000007485E000-memory.dmp

Filesize
6.9MB

Download
memory/808-3-0x00000000004A0000-0x00000000004B6000-memory.dmp

Filesize
88KB

Download
memory/808-4-0x0000000000520000-0x000000000052E000-memory.dmp

Filesize
56KB

Download
memory/808-5-0x0000000000BE0000-0x0000000000C56000-memory.dmp

Filesize
472KB

Download
memory/808-0-0x000000007417E000-0x000000007417F000-memory.dmp

Filesize
4KB

Download
memory/1184-17-0x0000000004E60000-0x0000000004FCC000-memory.dmp

Filesize
1.4MB

Download
memory/1184-13-0x0000000002BD0000-0x0000000002CD0000-memory.dmp

Filesize
1024KB

Download
memory/1184-25-0x0000000004E60000-0x0000000004FCC000-memory.dmp

Filesize
1.4MB

Download
memory/2532-20-0x0000000000EE0000-0x0000000000EE7000-memory.dmp

Filesize
28KB

Download
memory/2532-21-0x0000000000110000-0x000000000013F000-memory.dmp

Filesize
188KB

Download
memory/2764-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2764-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2764-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2764-14-0x00000000008F0000-0x0000000000BF3000-memory.dmp

Filesize
3.0MB

Download
memory/2764-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2764-16-0x0000000000280000-0x0000000000295000-memory.dmp

Filesize
84KB

Download
memory/2764-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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