formbook | b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d

General

Target

MalwareBazaar.exe
Size

620KB
MD5

035c35bf6a68763ba391504a7c6a4993
SHA1

2fb903b75098baf7d39fdc3db68cfb35e03100e8
SHA256

b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d
SHA512

4c6cbdcfed65bdcf1c37f93d02f6cf0ae839a3ac6016b594ff690a1d24615ba9abdeeb651734bb4b237c8cc9045e91c5ac25e1ed30b7762abe62a93a7170f049
SSDEEP

12288:j4lz4cX9/R3FcFCstoAsfqYFPV7PGuj9zcU/Nk8emr1y6m7H2ph1hRvjndCrkR:jcz4c7eFCseACJhzcU/Nkarub2fJvjdF

Score

10^/10

formbook ss24 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ss24

Decoy

agingwellhc.com

unikbetanggur.autos

eb2024yl.top

ja380.xyz

thehalcyon.studio

maudsoogrim.com

esteler10.click

mewtcp.xyz

www-zjbf1.club

kucinglucu.online

lunwencheck.com

65597.photos

erbxeu358h.top

startable.online

yousend.xyz

csharksg.com

centricoatings.com

ntruhslearn.xyz

achabakra.xyz

zuntool.com

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2612-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2976-22-0x0000000000070000-0x000000000009F000-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
2792	powershell.exe

Deletes itself 1 IoCs

pid	Process
1900	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2336 set thread context of 2612	2336	MalwareBazaar.exe	34
PID 2612 set thread context of 1200	2612	MalwareBazaar.exe	21
PID 2976 set thread context of 1200	2976	cscript.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 5 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MalwareBazaar.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2856	schtasks.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2612	MalwareBazaar.exe
2612	MalwareBazaar.exe
2792	powershell.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe
2976	cscript.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2612	MalwareBazaar.exe
2612	MalwareBazaar.exe
2612	MalwareBazaar.exe
2976	cscript.exe
2976	cscript.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2612	MalwareBazaar.exe
Token: SeDebugPrivilege	2792	powershell.exe
Token: SeDebugPrivilege	2976	cscript.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2792	2336	MalwareBazaar.exe	30
PID 2336 wrote to memory of 2792	2336	MalwareBazaar.exe	30
PID 2336 wrote to memory of 2792	2336	MalwareBazaar.exe	30
PID 2336 wrote to memory of 2792	2336	MalwareBazaar.exe	30
PID 2336 wrote to memory of 2856	2336	MalwareBazaar.exe	31
PID 2336 wrote to memory of 2856	2336	MalwareBazaar.exe	31
PID 2336 wrote to memory of 2856	2336	MalwareBazaar.exe	31
PID 2336 wrote to memory of 2856	2336	MalwareBazaar.exe	31
PID 2336 wrote to memory of 2612	2336	MalwareBazaar.exe	34
PID 2336 wrote to memory of 2612	2336	MalwareBazaar.exe	34
PID 2336 wrote to memory of 2612	2336	MalwareBazaar.exe	34
PID 2336 wrote to memory of 2612	2336	MalwareBazaar.exe	34
PID 2336 wrote to memory of 2612	2336	MalwareBazaar.exe	34
PID 2336 wrote to memory of 2612	2336	MalwareBazaar.exe	34
PID 2336 wrote to memory of 2612	2336	MalwareBazaar.exe	34
PID 1200 wrote to memory of 2976	1200	Explorer.EXE	36
PID 1200 wrote to memory of 2976	1200	Explorer.EXE	36
PID 1200 wrote to memory of 2976	1200	Explorer.EXE	36
PID 1200 wrote to memory of 2976	1200	Explorer.EXE	36
PID 2976 wrote to memory of 1900	2976	cscript.exe	37
PID 2976 wrote to memory of 1900	2976	cscript.exe	37
PID 2976 wrote to memory of 1900	2976	cscript.exe	37
PID 2976 wrote to memory of 1900	2976	cscript.exe	37

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1200
- 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 use of WriteProcessMemory
  PID:2336
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\DUsLon.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2792
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DUsLon" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDFD4.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2856
- - 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:2612
- C:\Windows\SysWOW64\cscript.exe
  "C:\Windows\SysWOW64\cscript.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:2976
- - 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:1900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpDFD4.tmp

Filesize
1KB

MD5
65df8cb4e2fe2992140ab7a1a220e8b6

SHA1
c95584fc7007ef04289001de36e05da61dc7b233

SHA256
c78d92963b4500d483a7bdb1d012cadf88089e479cfc1394b48dd7cc2b391482

SHA512
ce4bb01d3f9d7824ec159834dc860cb81f5f3900888da66a92611cdef6e475b72614def68232830a8a6435bf18893603170da4d50d4b9e608b99d6c76e745cbe

Download Submit
memory/2336-3-0x00000000009B0000-0x00000000009C6000-memory.dmp

Filesize
88KB

Download
memory/2336-2-0x0000000074C10000-0x00000000752FE000-memory.dmp

Filesize
6.9MB

Download
memory/2336-0-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

Filesize
4KB

Download
memory/2336-4-0x0000000000B30000-0x0000000000B3E000-memory.dmp

Filesize
56KB

Download
memory/2336-5-0x0000000004750000-0x00000000047C6000-memory.dmp

Filesize
472KB

Download
memory/2336-1-0x00000000012B0000-0x000000000134E000-memory.dmp

Filesize
632KB

Download
memory/2336-17-0x0000000074C10000-0x00000000752FE000-memory.dmp

Filesize
6.9MB

Download
memory/2612-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2612-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2612-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2612-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2976-21-0x0000000000520000-0x0000000000542000-memory.dmp

Filesize
136KB

Download
memory/2976-22-0x0000000000070000-0x000000000009F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads