formbook | 1dcf832ed4958dc635c13f89a6d2410a5357bef75ab7c5dd7c59f78c4c249ff4

Analysis

max time kernel
149s
max time network
135s
platform
windows11-21h2_x64
resource
win11-20250410-en
resource tags

arch:x64arch:x86image:win11-20250410-enlocale:en-usos:windows11-21h2-x64system
submitted
17/04/2025, 07:55

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General

Target

Purchase Order-P54477890.exe
Size

680KB
MD5

5ac076044272cb7878a22d6f5581fc4c
SHA1

9055ab9dca9fa390733c23a4de4ec9f15f59aaa5
SHA256

a90bca8c1f6a63cc34a896eb3883428fab6fb6b4aca385ac917fdafcdbf9e774
SHA512

009c77bfa2650940dbeacdc64093b7b9fbff633cfbb96f823a6a314fdd01e52a2d7633d071d10990c6f164edd5942dc6a252e7679d19c02369ddd04b60c4efd6
SSDEEP

12288:o1LM2iN0f2ThrfmT3cNfQhATUQXbFZmS0im4B2ngkR:p1WfKhreTZAYOPjQH

Score

10^/10

formbook bi14 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bi14

Decoy

ilansocials.online

rishticodiegfortyseven.online

ostase-ba.cfd

cinema.tech

omprasyacol.store

esir.shop

umhyal3gvbpl.xyz

lurv.wtf

aospin-sms.xyz

itness-apps-workout1.sbs

reshcarluxury.shop

3xq3.cyou

erraceheatpassion.lifestyle

octurasys.net

ilyrug.net

yj889.xyz

railertof.net

4270766.xyz

sduoduo11.sbs

oeboom.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
behavioral2/memory/5056-44-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2476-87-0x0000000001250000-0x000000000127F000-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
4628	powershell.exe
5748	powershell.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 5740 set thread context of 5056	5740	Purchase Order-P54477890.exe	85
PID 5056 set thread context of 3328	5056	vbc.exe	53
PID 2476 set thread context of 3328	2476	chkdsk.exe	53

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	Purchase Order-P54477890.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	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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

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
3444	schtasks.exe

Suspicious behavior: EnumeratesProcesses 63 IoCs

pid	Process
5740	Purchase Order-P54477890.exe
5740	Purchase Order-P54477890.exe
5740	Purchase Order-P54477890.exe
5740	Purchase Order-P54477890.exe
5748	powershell.exe
4628	powershell.exe
5740	Purchase Order-P54477890.exe
5056	vbc.exe
5056	vbc.exe
5748	powershell.exe
5056	vbc.exe
5056	vbc.exe
4628	powershell.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe
2476	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3328	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
5056	vbc.exe
5056	vbc.exe
5056	vbc.exe
2476	chkdsk.exe
2476	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

description	pid	Process
Token: SeDebugPrivilege	5740	Purchase Order-P54477890.exe
Token: SeDebugPrivilege	5748	powershell.exe
Token: SeDebugPrivilege	4628	powershell.exe
Token: SeDebugPrivilege	5056	vbc.exe
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeDebugPrivilege	2476	chkdsk.exe
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3328	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 5740 wrote to memory of 5748	5740	Purchase Order-P54477890.exe	79
PID 5740 wrote to memory of 5748	5740	Purchase Order-P54477890.exe	79
PID 5740 wrote to memory of 5748	5740	Purchase Order-P54477890.exe	79
PID 5740 wrote to memory of 4628	5740	Purchase Order-P54477890.exe	81
PID 5740 wrote to memory of 4628	5740	Purchase Order-P54477890.exe	81
PID 5740 wrote to memory of 4628	5740	Purchase Order-P54477890.exe	81
PID 5740 wrote to memory of 3444	5740	Purchase Order-P54477890.exe	83
PID 5740 wrote to memory of 3444	5740	Purchase Order-P54477890.exe	83
PID 5740 wrote to memory of 3444	5740	Purchase Order-P54477890.exe	83
PID 5740 wrote to memory of 5056	5740	Purchase Order-P54477890.exe	85
PID 5740 wrote to memory of 5056	5740	Purchase Order-P54477890.exe	85
PID 5740 wrote to memory of 5056	5740	Purchase Order-P54477890.exe	85
PID 5740 wrote to memory of 5056	5740	Purchase Order-P54477890.exe	85
PID 5740 wrote to memory of 5056	5740	Purchase Order-P54477890.exe	85
PID 5740 wrote to memory of 5056	5740	Purchase Order-P54477890.exe	85
PID 3328 wrote to memory of 2476	3328	Explorer.EXE	86
PID 3328 wrote to memory of 2476	3328	Explorer.EXE	86
PID 3328 wrote to memory of 2476	3328	Explorer.EXE	86
PID 2476 wrote to memory of 5168	2476	chkdsk.exe	87
PID 2476 wrote to memory of 5168	2476	chkdsk.exe	87
PID 2476 wrote to memory of 5168	2476	chkdsk.exe	87

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3328
- C:\Users\Admin\AppData\Local\Temp\Purchase Order-P54477890.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase Order-P54477890.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5740
- - 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\Purchase Order-P54477890.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5748
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\nfERrYgNoi.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4628
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nfERrYgNoi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCFB4.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3444
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:5056
- 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:2476
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5168

Network

MITRE ATT&CK Enterprise v16

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

Query Registry

T1012

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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
7a5c624976e9092bf7f3cf55db037a7d

SHA1
ca588d6bb1ef85f14fb81b9f0f1aa1fdbd572471

SHA256
3865703cff65953c73bda0052895eedf3feb9e443f147a818dbb1a3a1851f36b

SHA512
b71f5bd7fd1842b9d146bc4d3c4bc618ae6658dac0b0ceec10cbca2f70d782db1a97d1f825c38168859efb81a20e696d633fcb9a89adad6dcc65c9bf982cec33

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3i3wtiqd.ige.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCFB4.tmp

Filesize
1KB

MD5
1cfc8d3393db7587975d247cbd99dbcb

SHA1
70b667e999f325b8621699fdd3dd33a98ee3b6d7

SHA256
c9d57e8c92b224c51cdc78d041d492285c90ef9a6bfe5952850fb4684c5525a3

SHA512
6027891968e3cec93ca3bd34d47203db5b79c50fb6548872b3cbcd66e3ef171182257c9608d461a13dd9b532b1d5e1f11334a4a30575223add03c19beb96ab99

Download Submit
memory/2476-87-0x0000000001250000-0x000000000127F000-memory.dmp

Filesize
188KB

Download
memory/2476-86-0x0000000000ED0000-0x0000000000EDA000-memory.dmp

Filesize
40KB

Download
memory/3328-89-0x0000000005D50000-0x0000000005E1B000-memory.dmp

Filesize
812KB

Download
memory/4628-33-0x0000000074270000-0x0000000074A21000-memory.dmp

Filesize
7.7MB

Download
memory/4628-79-0x0000000007D90000-0x0000000007D98000-memory.dmp

Filesize
32KB

Download
memory/4628-84-0x0000000074270000-0x0000000074A21000-memory.dmp

Filesize
7.7MB

Download
memory/4628-74-0x0000000007CE0000-0x0000000007D76000-memory.dmp

Filesize
600KB

Download
memory/4628-20-0x0000000074270000-0x0000000074A21000-memory.dmp

Filesize
7.7MB

Download
memory/4628-62-0x0000000074B20000-0x0000000074B6C000-memory.dmp

Filesize
304KB

Download
memory/4628-43-0x0000000074270000-0x0000000074A21000-memory.dmp

Filesize
7.7MB

Download
memory/5056-44-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5740-6-0x0000000074270000-0x0000000074A21000-memory.dmp

Filesize
7.7MB

Download
memory/5740-0-0x000000007427E000-0x000000007427F000-memory.dmp

Filesize
4KB

Download
memory/5740-10-0x00000000079D0000-0x0000000007A4A000-memory.dmp

Filesize
488KB

Download
memory/5740-9-0x0000000074270000-0x0000000074A21000-memory.dmp

Filesize
7.7MB

Download
memory/5740-8-0x000000007427E000-0x000000007427F000-memory.dmp

Filesize
4KB

Download
memory/5740-7-0x00000000050F0000-0x0000000005102000-memory.dmp

Filesize
72KB

Download
memory/5740-46-0x0000000074270000-0x0000000074A21000-memory.dmp

Filesize
7.7MB

Download
memory/5740-5-0x0000000004E50000-0x0000000004E5A000-memory.dmp

Filesize
40KB

Download
memory/5740-4-0x0000000004DB0000-0x0000000004E4C000-memory.dmp

Filesize
624KB

Download
memory/5740-3-0x0000000004BF0000-0x0000000004C82000-memory.dmp

Filesize
584KB

Download
memory/5740-2-0x0000000005100000-0x00000000056A6000-memory.dmp

Filesize
5.6MB

Download
memory/5740-1-0x00000000000A0000-0x000000000014C000-memory.dmp

Filesize
688KB

Download
memory/5748-17-0x0000000005B50000-0x000000000617A000-memory.dmp

Filesize
6.2MB

Download
memory/5748-48-0x00000000067E0000-0x00000000067FE000-memory.dmp

Filesize
120KB

Download
memory/5748-49-0x0000000006820000-0x000000000686C000-memory.dmp

Filesize
304KB

Download
memory/5748-60-0x0000000006DF0000-0x0000000006E0E000-memory.dmp

Filesize
120KB

Download
memory/5748-34-0x0000000006330000-0x0000000006687000-memory.dmp

Filesize
3.3MB

Download
memory/5748-61-0x0000000007A10000-0x0000000007AB4000-memory.dmp

Filesize
656KB

Download
memory/5748-51-0x0000000074B20000-0x0000000074B6C000-memory.dmp

Filesize
304KB

Download
memory/5748-50-0x00000000077C0000-0x00000000077F4000-memory.dmp

Filesize
208KB

Download
memory/5748-71-0x0000000008190000-0x000000000880A000-memory.dmp

Filesize
6.5MB

Download
memory/5748-72-0x0000000007B40000-0x0000000007B5A000-memory.dmp

Filesize
104KB

Download
memory/5748-73-0x0000000007BC0000-0x0000000007BCA000-memory.dmp

Filesize
40KB

Download
memory/5748-32-0x00000000062C0000-0x0000000006326000-memory.dmp

Filesize
408KB

Download
memory/5748-75-0x0000000007D50000-0x0000000007D61000-memory.dmp

Filesize
68KB

Download
memory/5748-76-0x0000000007D80000-0x0000000007D8E000-memory.dmp

Filesize
56KB

Download
memory/5748-77-0x0000000007D90000-0x0000000007DA5000-memory.dmp

Filesize
84KB

Download
memory/5748-78-0x0000000007E90000-0x0000000007EAA000-memory.dmp

Filesize
104KB

Download
memory/5748-28-0x0000000006250000-0x00000000062B6000-memory.dmp

Filesize
408KB

Download
memory/5748-85-0x0000000074270000-0x0000000074A21000-memory.dmp

Filesize
7.7MB

Download
memory/5748-26-0x00000000061B0000-0x00000000061D2000-memory.dmp

Filesize
136KB

Download
memory/5748-19-0x0000000074270000-0x0000000074A21000-memory.dmp

Filesize
7.7MB

Download
memory/5748-18-0x0000000074270000-0x0000000074A21000-memory.dmp

Filesize
7.7MB

Download
memory/5748-16-0x0000000074270000-0x0000000074A21000-memory.dmp

Filesize
7.7MB

Download
memory/5748-15-0x0000000002FF0000-0x0000000003026000-memory.dmp

Filesize
216KB

Download