formbook | 92958c2e2d940de78a7f5352b00890f291d568816a8fe1b2bf8c572941644ec0

Analysis

max time kernel
149s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27/03/2025, 13:18

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General

Target

vstdlib_s64.dll
Size

10.0MB
MD5

897e2193493cfd989d82f6a559bf1b2a
SHA1

df837bc19bf863ce466588ca3121fed884922b90
SHA256

92958c2e2d940de78a7f5352b00890f291d568816a8fe1b2bf8c572941644ec0
SHA512

761d12c8ebf7df3bbdc7cddf1220065a4e13780057c99b2e43bd653f1c00154ad9e1c8f2236373d54c985ee710c8847813223d244ad170c678593b3ce8e97996
SSDEEP

98304:nt/DDvVWLvBmmZCPPSVHxySAknm58mQzKSawKlhW1TS28kvGGp:t1WLvBzCSVHxySAknm58mHw6hKVGGp

Score

10^/10

formbook gt23 discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gt23

Decoy

awkeyesunspotsunfire.top

valbardrc.store

idadari29nice.makeup

haymu.shop

hybf2025.sbs

obbiny.xyz

dlecore.xyz

rabbeat.live

irelily.vip

oahnyn.shop

om-massfadq.top

lizalyn.work

irlo.shop

hostsolver.store

ylastpics.info

adfgt.xyz

cis.club

iskol.fun

riceflashradarlab.xyz

enovhojecnhi.shop

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2772-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2772-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2580-28-0x0000000000070000-0x000000000009F000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-1488793075-819845221-1497111674-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	wscript.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\HRTXNX0H9V = "C:\\Program Files (x86)\\Windows Media Player\\wmplayer.exe"	wscript.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2224 set thread context of 2772	2224	rundll32.exe	40
PID 2772 set thread context of 1188	2772	wmplayer.exe	21
PID 2580 set thread context of 2660	2580	wscript.exe	39
PID 2580 set thread context of 1648	2580	wscript.exe	42

System Location Discovery: System Language Discovery 1 TTPs 1 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	wscript.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-1488793075-819845221-1497111674-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wscript.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
2772	wmplayer.exe
2772	wmplayer.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1648	explorer.exe

Suspicious behavior: MapViewOfSection 10 IoCs

pid	Process
2772	wmplayer.exe
2772	wmplayer.exe
2772	wmplayer.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe
2580	wscript.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

description	pid	Process
Token: SeDebugPrivilege	2224	rundll32.exe
Token: SeDebugPrivilege	2772	wmplayer.exe
Token: SeDebugPrivilege	2580	wscript.exe
Token: SeShutdownPrivilege	1648	explorer.exe
Token: SeShutdownPrivilege	1648	explorer.exe
Token: SeShutdownPrivilege	1648	explorer.exe
Token: SeShutdownPrivilege	1648	explorer.exe
Token: SeShutdownPrivilege	1648	explorer.exe
Token: SeShutdownPrivilege	1648	explorer.exe
Token: SeShutdownPrivilege	1648	explorer.exe
Token: SeShutdownPrivilege	1648	explorer.exe
Token: SeShutdownPrivilege	1648	explorer.exe
Token: SeShutdownPrivilege	1648	explorer.exe
Token: SeShutdownPrivilege	1648	explorer.exe
Token: SeShutdownPrivilege	1648	explorer.exe

Suspicious use of FindShellTrayWindow 25 IoCs

pid	Process
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe

Suspicious use of SendNotifyMessage 20 IoCs

pid	Process
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe
1648	explorer.exe

Suspicious use of WriteProcessMemory 62 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2640	2224	rundll32.exe	31
PID 2224 wrote to memory of 2640	2224	rundll32.exe	31
PID 2224 wrote to memory of 2640	2224	rundll32.exe	31
PID 2224 wrote to memory of 2640	2224	rundll32.exe	31
PID 2224 wrote to memory of 2640	2224	rundll32.exe	31
PID 2224 wrote to memory of 2640	2224	rundll32.exe	31
PID 2224 wrote to memory of 2728	2224	rundll32.exe	32
PID 2224 wrote to memory of 2728	2224	rundll32.exe	32
PID 2224 wrote to memory of 2728	2224	rundll32.exe	32
PID 2224 wrote to memory of 2728	2224	rundll32.exe	32
PID 2224 wrote to memory of 2728	2224	rundll32.exe	32
PID 2224 wrote to memory of 2728	2224	rundll32.exe	32
PID 2224 wrote to memory of 2748	2224	rundll32.exe	33
PID 2224 wrote to memory of 2748	2224	rundll32.exe	33
PID 2224 wrote to memory of 2748	2224	rundll32.exe	33
PID 2224 wrote to memory of 2748	2224	rundll32.exe	33
PID 2224 wrote to memory of 2764	2224	rundll32.exe	34
PID 2224 wrote to memory of 2764	2224	rundll32.exe	34
PID 2224 wrote to memory of 2764	2224	rundll32.exe	34
PID 2224 wrote to memory of 2764	2224	rundll32.exe	34
PID 2224 wrote to memory of 2764	2224	rundll32.exe	34
PID 2224 wrote to memory of 2764	2224	rundll32.exe	34
PID 2224 wrote to memory of 2732	2224	rundll32.exe	35
PID 2224 wrote to memory of 2732	2224	rundll32.exe	35
PID 2224 wrote to memory of 2732	2224	rundll32.exe	35
PID 2224 wrote to memory of 2732	2224	rundll32.exe	35
PID 2224 wrote to memory of 2692	2224	rundll32.exe	36
PID 2224 wrote to memory of 2692	2224	rundll32.exe	36
PID 2224 wrote to memory of 2692	2224	rundll32.exe	36
PID 2224 wrote to memory of 2692	2224	rundll32.exe	36
PID 2224 wrote to memory of 2692	2224	rundll32.exe	36
PID 2224 wrote to memory of 2540	2224	rundll32.exe	37
PID 2224 wrote to memory of 2540	2224	rundll32.exe	37
PID 2224 wrote to memory of 2540	2224	rundll32.exe	37
PID 2224 wrote to memory of 2540	2224	rundll32.exe	37
PID 2224 wrote to memory of 2540	2224	rundll32.exe	37
PID 2224 wrote to memory of 2652	2224	rundll32.exe	38
PID 2224 wrote to memory of 2652	2224	rundll32.exe	38
PID 2224 wrote to memory of 2652	2224	rundll32.exe	38
PID 2224 wrote to memory of 2652	2224	rundll32.exe	38
PID 2224 wrote to memory of 2652	2224	rundll32.exe	38
PID 2224 wrote to memory of 2660	2224	rundll32.exe	39
PID 2224 wrote to memory of 2660	2224	rundll32.exe	39
PID 2224 wrote to memory of 2660	2224	rundll32.exe	39
PID 2224 wrote to memory of 2660	2224	rundll32.exe	39
PID 2224 wrote to memory of 2660	2224	rundll32.exe	39
PID 2224 wrote to memory of 2772	2224	rundll32.exe	40
PID 2224 wrote to memory of 2772	2224	rundll32.exe	40
PID 2224 wrote to memory of 2772	2224	rundll32.exe	40
PID 2224 wrote to memory of 2772	2224	rundll32.exe	40
PID 2224 wrote to memory of 2772	2224	rundll32.exe	40
PID 2224 wrote to memory of 2772	2224	rundll32.exe	40
PID 2224 wrote to memory of 2772	2224	rundll32.exe	40
PID 1188 wrote to memory of 2580	1188	Explorer.EXE	41
PID 1188 wrote to memory of 2580	1188	Explorer.EXE	41
PID 1188 wrote to memory of 2580	1188	Explorer.EXE	41
PID 1188 wrote to memory of 2580	1188	Explorer.EXE	41
PID 2580 wrote to memory of 1760	2580	wscript.exe	44
PID 2580 wrote to memory of 1760	2580	wscript.exe	44
PID 2580 wrote to memory of 1760	2580	wscript.exe	44
PID 2580 wrote to memory of 1760	2580	wscript.exe	44
PID 2580 wrote to memory of 1760	2580	wscript.exe	44

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1188
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\vstdlib_s64.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2224
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
    3⤵
    PID:2640
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
    3⤵
    PID:2728
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
    3⤵
    PID:2748
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    PID:2764
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
    3⤵
    PID:2732
- - C:\Windows\System32\calc.exe
    "C:\Windows\System32\calc.exe"
    3⤵
    PID:2692
- - C:\Windows\System32\svchost.exe
    "C:\Windows\System32\svchost.exe"
    3⤵
    PID:2540
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe"
    3⤵
    PID:2652
- - C:\Windows\System32\notepad.exe
    "C:\Windows\System32\notepad.exe"
    3⤵
    PID:2660
- - C:\Program Files (x86)\Windows Media Player\wmplayer.exe
    "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2772
- C:\Windows\SysWOW64\wscript.exe
  "C:\Windows\SysWOW64\wscript.exe"
  2⤵
  - Adds policy Run key to start application
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2580
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1760

C:\Windows\explorer.exe
explorer.exe
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1648

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\50O70UT1\50Ologim.jpeg

Filesize
27KB

MD5
45917bf41b53bae1253f6c204ff7d996

SHA1
51a7091c486d3c07ca7f2b2c5a1bb62e842f62d2

SHA256
ac262babaaee1cb9091931d0e168d0ec4e4e047d79584198171774317f6bd3d3

SHA512
2aed2fac0aeff7498fec2e64713bd9b91106bef0a7a901399b51a1ea60466cca0c8bb41b21ddcf21c2c3d66efd61d26ff1572f45c07054547410a8614c5bc8e2

Download Submit
C:\Users\Admin\AppData\Roaming\50O70UT1\50Ologrf.ini

Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\50O70UT1\50Ologri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\50O70UT1\50Ologrv.ini

Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/1188-26-0x0000000002540000-0x0000000002541000-memory.dmp

Filesize
4KB

Download
memory/1188-33-0x0000000004F60000-0x0000000005082000-memory.dmp

Filesize
1.1MB

Download
memory/1188-32-0x0000000002520000-0x0000000002521000-memory.dmp

Filesize
4KB

Download
memory/1188-23-0x0000000004F60000-0x0000000005082000-memory.dmp

Filesize
1.1MB

Download
memory/1648-39-0x0000000006AA0000-0x0000000006C25000-memory.dmp

Filesize
1.5MB

Download
memory/1648-37-0x0000000003C50000-0x0000000003E50000-memory.dmp

Filesize
2.0MB

Download
memory/1648-57-0x0000000002950000-0x0000000002960000-memory.dmp

Filesize
64KB

Download
memory/2580-24-0x00000000000A0000-0x00000000000C6000-memory.dmp

Filesize
152KB

Download
memory/2580-25-0x00000000000A0000-0x00000000000C6000-memory.dmp

Filesize
152KB

Download
memory/2580-28-0x0000000000070000-0x000000000009F000-memory.dmp

Filesize
188KB

Download
memory/2640-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2640-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2772-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2772-22-0x0000000000220000-0x0000000000235000-memory.dmp

Filesize
84KB

Download
memory/2772-19-0x0000000000A10000-0x0000000000D13000-memory.dmp

Filesize
3.0MB

Download
memory/2772-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2772-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download