formbook | 58dfe85f084bedbc1861ed4afada8f0e284a70e10c84065cc6df13adc9fb45db

Analysis

max time kernel
146s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-01-2025 09:05

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General

Target

TKq18zZ3Rtcbhfd.exe
Size

690KB
MD5

40a0efae53cd30740fd47e5f79a46eae
SHA1

2ea4625d31a8c4fa8e6c9b3bc4abecc6341fe788
SHA256

58dfe85f084bedbc1861ed4afada8f0e284a70e10c84065cc6df13adc9fb45db
SHA512

0caabef7ce39f1d2fb4f21c7cf8f59da389babc1f590910ea85c8b5a4d28e40a572802ffdf55eef95d4c41999150a777b55825056b3b8d7bf744cb567fbee1e0
SSDEEP

12288:Qiv1uq3JfXyN9u9A0NAUFE/P37NfmAl12tZ9uLUxL7HNHJTs/m:RNuqfC/unmUQ7NpqLB

Score

10^/10

formbook a02d discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a02d

Decoy

coplus.market

oofing-jobs-74429.bond

healchemists.xyz

oofcarpenternearme-jp.xyz

enewebsolutions.online

harepoint.legal

88977.club

omptables.xyz

eat-pumps-31610.bond

endown.graphics

amsexgirls.website

ovevibes.xyz

u-thiensu.online

yblinds.xyz

rumpchiefofstaff.store

erzog.fun

rrm.lat

agiclime.pro

agaviet59.shop

lbdoanhnhan.net

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
behavioral1/memory/2720-24-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2576-28-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
1440	powershell.exe
2804	powershell.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1660 set thread context of 2720	1660	TKq18zZ3Rtcbhfd.exe	37
PID 2720 set thread context of 1224	2720	RegSvcs.exe	21
PID 2576 set thread context of 1224	2576	raserver.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 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	TKq18zZ3Rtcbhfd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
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	raserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
2772	schtasks.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
1660	TKq18zZ3Rtcbhfd.exe
1440	powershell.exe
2804	powershell.exe
1660	TKq18zZ3Rtcbhfd.exe
2720	RegSvcs.exe
2720	RegSvcs.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe
2576	raserver.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2720	RegSvcs.exe
2720	RegSvcs.exe
2720	RegSvcs.exe
2576	raserver.exe
2576	raserver.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1660	TKq18zZ3Rtcbhfd.exe
Token: SeDebugPrivilege	1440	powershell.exe
Token: SeDebugPrivilege	2804	powershell.exe
Token: SeDebugPrivilege	2720	RegSvcs.exe
Token: SeDebugPrivilege	2576	raserver.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 1440	1660	TKq18zZ3Rtcbhfd.exe	31
PID 1660 wrote to memory of 1440	1660	TKq18zZ3Rtcbhfd.exe	31
PID 1660 wrote to memory of 1440	1660	TKq18zZ3Rtcbhfd.exe	31
PID 1660 wrote to memory of 1440	1660	TKq18zZ3Rtcbhfd.exe	31
PID 1660 wrote to memory of 2804	1660	TKq18zZ3Rtcbhfd.exe	33
PID 1660 wrote to memory of 2804	1660	TKq18zZ3Rtcbhfd.exe	33
PID 1660 wrote to memory of 2804	1660	TKq18zZ3Rtcbhfd.exe	33
PID 1660 wrote to memory of 2804	1660	TKq18zZ3Rtcbhfd.exe	33
PID 1660 wrote to memory of 2772	1660	TKq18zZ3Rtcbhfd.exe	35
PID 1660 wrote to memory of 2772	1660	TKq18zZ3Rtcbhfd.exe	35
PID 1660 wrote to memory of 2772	1660	TKq18zZ3Rtcbhfd.exe	35
PID 1660 wrote to memory of 2772	1660	TKq18zZ3Rtcbhfd.exe	35
PID 1660 wrote to memory of 2720	1660	TKq18zZ3Rtcbhfd.exe	37
PID 1660 wrote to memory of 2720	1660	TKq18zZ3Rtcbhfd.exe	37
PID 1660 wrote to memory of 2720	1660	TKq18zZ3Rtcbhfd.exe	37
PID 1660 wrote to memory of 2720	1660	TKq18zZ3Rtcbhfd.exe	37
PID 1660 wrote to memory of 2720	1660	TKq18zZ3Rtcbhfd.exe	37
PID 1660 wrote to memory of 2720	1660	TKq18zZ3Rtcbhfd.exe	37
PID 1660 wrote to memory of 2720	1660	TKq18zZ3Rtcbhfd.exe	37
PID 1660 wrote to memory of 2720	1660	TKq18zZ3Rtcbhfd.exe	37
PID 1660 wrote to memory of 2720	1660	TKq18zZ3Rtcbhfd.exe	37
PID 1660 wrote to memory of 2720	1660	TKq18zZ3Rtcbhfd.exe	37
PID 1224 wrote to memory of 2576	1224	Explorer.EXE	38
PID 1224 wrote to memory of 2576	1224	Explorer.EXE	38
PID 1224 wrote to memory of 2576	1224	Explorer.EXE	38
PID 1224 wrote to memory of 2576	1224	Explorer.EXE	38
PID 2576 wrote to memory of 484	2576	raserver.exe	39
PID 2576 wrote to memory of 484	2576	raserver.exe	39
PID 2576 wrote to memory of 484	2576	raserver.exe	39
PID 2576 wrote to memory of 484	2576	raserver.exe	39

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Users\Admin\AppData\Local\Temp\TKq18zZ3Rtcbhfd.exe
  "C:\Users\Admin\AppData\Local\Temp\TKq18zZ3Rtcbhfd.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1660
- - 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\TKq18zZ3Rtcbhfd.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1440
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ChQJmcO.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2804
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ChQJmcO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1CB4.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2772
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2720
- 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:2576
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:484

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

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\tmp1CB4.tmp

Filesize
1KB

MD5
5d03dceef6a9e775f4c8a0ce236b8568

SHA1
5f471565e618e0b284cbc03ced24860be008c428

SHA256
2a6009a3cf4dac3a108d4212b47ca1c25953e3127c0904f83259c9e41ce8a7c1

SHA512
f2ff52c86988b7a98702a91c811212adb1cf39c78be5a52790db7ab543bf2164ca9cb6adf237aad457d0faeba5d1e99397321fb3d28f600e541aec4026e9bbec

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
98f76c8c57f634cdff61230b16933646

SHA1
e20970618d056345d5edc3c858559c7384c7a03a

SHA256
e6fba5d808a1df3b3b4d4bc2523cdd4d6e1898337732e53899f6f70e5c34d9b1

SHA512
52fe5d5487b8da1a33d2192343d322372504eea3e99fe79d39c6484cb98c390a7099a086a315c56e65606387927ef5634c1714d7eb216bcbef773cbeb4f32b11

Download Submit
memory/1660-4-0x000000007469E000-0x000000007469F000-memory.dmp

Filesize
4KB

Download
memory/1660-25-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/1660-0-0x000000007469E000-0x000000007469F000-memory.dmp

Filesize
4KB

Download
memory/1660-5-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/1660-6-0x0000000005C50000-0x0000000005CCA000-memory.dmp

Filesize
488KB

Download
memory/1660-2-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/1660-1-0x0000000001360000-0x0000000001414000-memory.dmp

Filesize
720KB

Download
memory/1660-3-0x0000000000530000-0x000000000054A000-memory.dmp

Filesize
104KB

Download
memory/2576-28-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2576-27-0x0000000000590000-0x00000000005AC000-memory.dmp

Filesize
112KB

Download
memory/2720-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2720-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2720-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2720-24-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download