formbook | 6dc1bba66cba9a4ee7a5156375e1935bd30c6b1022bea4082fb3714ce5c73e07

General

Target

RFQ1024.exe
Size

588KB
MD5

3429170427053d7d39dc81b889d0097e
SHA1

8631c8767beda82b2b14f2de215d745e512f3ea2
SHA256

6dc1bba66cba9a4ee7a5156375e1935bd30c6b1022bea4082fb3714ce5c73e07
SHA512

8c73ee16f331104895c338476146053b488a7695bcefbf9dea44385ba671ed31be065a03c30ae79a8118e02668f6a0fcaae5bf06d476c92156f0c4c6a4af2d6b
SSDEEP

12288:pBtLYydPGLVH+xV4QL/ywRMufCXgnWusDYdhjB5gjYsSOBddtTJzkR:pBRFtGJ+xVbLvRM3XOWusDeNOjYs0

Score

10^/10

formbook c24t discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c24t

Decoy

ealthbridgeccs.online

ngelicais.art

uktuksu1.sbs

fapoker.asia

hecreature.tech

orenzoplaybest14.xyz

op-smartphones-deal.today

delark.click

7395.asia

otnews.cfd

j16e.xyz

oko.events

fscxb.top

roudtxliberals.vote

asas-br.bond

ourhealthyourlife.shop

fbpd.top

j9u9.xyz

uijiuw.top

aming-chair-37588.bond

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/1856-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1856-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1840-24-0x0000000000080000-0x00000000000AF000-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
2872	powershell.exe

Deletes itself 1 IoCs

pid	Process
480	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2480 set thread context of 1856	2480	RFQ1024.exe	34
PID 1856 set thread context of 1208	1856	RFQ1024.exe	21
PID 1840 set thread context of 1208	1840	systray.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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	systray.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RFQ1024.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
2480	RFQ1024.exe
2480	RFQ1024.exe
2480	RFQ1024.exe
2480	RFQ1024.exe
2480	RFQ1024.exe
2480	RFQ1024.exe
1856	RFQ1024.exe
1856	RFQ1024.exe
2872	powershell.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe
1840	systray.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1856	RFQ1024.exe
1856	RFQ1024.exe
1856	RFQ1024.exe
1840	systray.exe
1840	systray.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2480	RFQ1024.exe
Token: SeDebugPrivilege	1856	RFQ1024.exe
Token: SeDebugPrivilege	2872	powershell.exe
Token: SeDebugPrivilege	1840	systray.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 2872	2480	RFQ1024.exe	30
PID 2480 wrote to memory of 2872	2480	RFQ1024.exe	30
PID 2480 wrote to memory of 2872	2480	RFQ1024.exe	30
PID 2480 wrote to memory of 2872	2480	RFQ1024.exe	30
PID 2480 wrote to memory of 2272	2480	RFQ1024.exe	31
PID 2480 wrote to memory of 2272	2480	RFQ1024.exe	31
PID 2480 wrote to memory of 2272	2480	RFQ1024.exe	31
PID 2480 wrote to memory of 2272	2480	RFQ1024.exe	31
PID 2480 wrote to memory of 2840	2480	RFQ1024.exe	33
PID 2480 wrote to memory of 2840	2480	RFQ1024.exe	33
PID 2480 wrote to memory of 2840	2480	RFQ1024.exe	33
PID 2480 wrote to memory of 2840	2480	RFQ1024.exe	33
PID 2480 wrote to memory of 1856	2480	RFQ1024.exe	34
PID 2480 wrote to memory of 1856	2480	RFQ1024.exe	34
PID 2480 wrote to memory of 1856	2480	RFQ1024.exe	34
PID 2480 wrote to memory of 1856	2480	RFQ1024.exe	34
PID 2480 wrote to memory of 1856	2480	RFQ1024.exe	34
PID 2480 wrote to memory of 1856	2480	RFQ1024.exe	34
PID 2480 wrote to memory of 1856	2480	RFQ1024.exe	34
PID 1208 wrote to memory of 1840	1208	Explorer.EXE	35
PID 1208 wrote to memory of 1840	1208	Explorer.EXE	35
PID 1208 wrote to memory of 1840	1208	Explorer.EXE	35
PID 1208 wrote to memory of 1840	1208	Explorer.EXE	35
PID 1840 wrote to memory of 480	1840	systray.exe	36
PID 1840 wrote to memory of 480	1840	systray.exe	36
PID 1840 wrote to memory of 480	1840	systray.exe	36
PID 1840 wrote to memory of 480	1840	systray.exe	36

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\RFQ1024.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ1024.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2480
- - 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\RFQ1024.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2872
- - C:\Users\Admin\AppData\Local\Temp\RFQ1024.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ1024.exe"
    3⤵
    PID:2272
- - C:\Users\Admin\AppData\Local\Temp\RFQ1024.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ1024.exe"
    3⤵
    PID:2840
- - C:\Users\Admin\AppData\Local\Temp\RFQ1024.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ1024.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1856
- C:\Windows\SysWOW64\systray.exe
  "C:\Windows\SysWOW64\systray.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:1840
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\RFQ1024.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:480

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

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

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Downloads

memory/1208-20-0x00000000065E0000-0x00000000066DF000-memory.dmp

Filesize
1020KB

Download
memory/1208-26-0x00000000065E0000-0x00000000066DF000-memory.dmp

Filesize
1020KB

Download
memory/1208-18-0x00000000044D0000-0x00000000046D0000-memory.dmp

Filesize
2.0MB

Download
memory/1840-24-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1840-23-0x0000000000AD0000-0x0000000000AD5000-memory.dmp

Filesize
20KB

Download
memory/1856-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1856-17-0x0000000000210000-0x0000000000224000-memory.dmp

Filesize
80KB

Download
memory/1856-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1856-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1856-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1856-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1856-14-0x00000000008A0000-0x0000000000BA3000-memory.dmp

Filesize
3.0MB

Download
memory/2480-6-0x0000000005010000-0x0000000005086000-memory.dmp

Filesize
472KB

Download
memory/2480-5-0x0000000074BB0000-0x000000007529E000-memory.dmp

Filesize
6.9MB

Download
memory/2480-19-0x0000000074BB0000-0x000000007529E000-memory.dmp

Filesize
6.9MB

Download
memory/2480-4-0x0000000074BBE000-0x0000000074BBF000-memory.dmp

Filesize
4KB

Download
memory/2480-0-0x0000000074BBE000-0x0000000074BBF000-memory.dmp

Filesize
4KB

Download
memory/2480-3-0x0000000000520000-0x0000000000530000-memory.dmp

Filesize
64KB

Download
memory/2480-2-0x0000000074BB0000-0x000000007529E000-memory.dmp

Filesize
6.9MB

Download
memory/2480-1-0x0000000000360000-0x00000000003F6000-memory.dmp

Filesize
600KB

Download

Analysis

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