formbook | b13f0477dc1fa39cf53bb31ea61dc7068e57135953283538cb16155703d6c609

General

Target

mgkreERjvr7XiMz.exe
Size

404KB
MD5

332c98e548482176fda185f932f2ed18
SHA1

8bd6cfdc0950cd2fad8f64765b6107cc2d6f87eb
SHA256

ce6d1fc239eb571fde9427c0d7f11d7b6a7a1c0466711524b690ca0de3556a6b
SHA512

20a1a33c6e4358469ea2227687fdcb7eec13503a483c866e4196ac70a639b8320e496d6b2bb75facbd0789e0bd01aed1c9bfa0626c3b136c99b27b8840d5696a

Score

10^/10

formbook duj evasion persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

duj

Decoy

deapink.pink

tkmdz.com

nytzshicai.com

photos-identite-dijon.com

ekanun.net

xn--fiqy4bxl57l9sag6f6wb.ink

slivercat5.com

ai-ethics.net

510ns.com

inotherways.com

ridesharesettelment.com

zjxiangnong.com

aoraessentials.com

sheap-list.com

heshengqy.com

experts-comptables-paris-17.com

parissummerolympics2024.info

gtyx88.com

devopsonjob.com

vodacred.com

Signatures

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

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/652-61-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/652-62-0x000000000041E2E0-mapping.dmp	formbook
behavioral1/memory/1388-70-0x0000000000080000-0x00000000000AD000-memory.dmp	formbook

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DT8PFTBPRT = "C:\\Program Files (x86)\\Pvrthbp\\configjxlxhzix.exe"	svchost.exe

Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

mgkreERjvr7XiMz.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	mgkreERjvr7XiMz.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	mgkreERjvr7XiMz.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

mgkreERjvr7XiMz.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	mgkreERjvr7XiMz.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	mgkreERjvr7XiMz.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

mgkreERjvr7XiMz.exeMSBuild.exesvchost.exe

description	pid	process	target process
PID 1676 set thread context of 652	1676	mgkreERjvr7XiMz.exe	MSBuild.exe
PID 652 set thread context of 1200	652	MSBuild.exe	Explorer.EXE
PID 1388 set thread context of 1200	1388	svchost.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

svchost.exe

description ioc process

File opened for modification C:\Program Files (x86)\Pvrthbp\configjxlxhzix.exe svchost.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1808 schtasks.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Pvrthbp\configjxlxhzix.exe	svchost.exe

pid	process
1808	schtasks.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	svchost.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

MSBuild.exesvchost.exe

pid	process
652	MSBuild.exe
652	MSBuild.exe
1388	svchost.exe
1388	svchost.exe
1388	svchost.exe
1388	svchost.exe
1388	svchost.exe
1388	svchost.exe
1388	svchost.exe
1388	svchost.exe
1388	svchost.exe
1388	svchost.exe
1388	svchost.exe
1388	svchost.exe
1388	svchost.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

MSBuild.exesvchost.exe

pid process

652 MSBuild.exe
652 MSBuild.exe
652 MSBuild.exe
1388 svchost.exe
1388 svchost.exe
1388 svchost.exe
1388 svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

mgkreERjvr7XiMz.exeMSBuild.exesvchost.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1676	mgkreERjvr7XiMz.exe
Token: SeDebugPrivilege	652	MSBuild.exe
Token: SeDebugPrivilege	1388	svchost.exe
Token: SeShutdownPrivilege	1200	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

mgkreERjvr7XiMz.exeExplorer.EXEsvchost.exe

description	pid	process	target process
PID 1676 wrote to memory of 1808	1676	mgkreERjvr7XiMz.exe	schtasks.exe
PID 1676 wrote to memory of 1808	1676	mgkreERjvr7XiMz.exe	schtasks.exe
PID 1676 wrote to memory of 1808	1676	mgkreERjvr7XiMz.exe	schtasks.exe
PID 1676 wrote to memory of 1808	1676	mgkreERjvr7XiMz.exe	schtasks.exe
PID 1676 wrote to memory of 652	1676	mgkreERjvr7XiMz.exe	MSBuild.exe
PID 1676 wrote to memory of 652	1676	mgkreERjvr7XiMz.exe	MSBuild.exe
PID 1676 wrote to memory of 652	1676	mgkreERjvr7XiMz.exe	MSBuild.exe
PID 1676 wrote to memory of 652	1676	mgkreERjvr7XiMz.exe	MSBuild.exe
PID 1676 wrote to memory of 652	1676	mgkreERjvr7XiMz.exe	MSBuild.exe
PID 1676 wrote to memory of 652	1676	mgkreERjvr7XiMz.exe	MSBuild.exe
PID 1676 wrote to memory of 652	1676	mgkreERjvr7XiMz.exe	MSBuild.exe
PID 1200 wrote to memory of 1388	1200	Explorer.EXE	svchost.exe
PID 1200 wrote to memory of 1388	1200	Explorer.EXE	svchost.exe
PID 1200 wrote to memory of 1388	1200	Explorer.EXE	svchost.exe
PID 1200 wrote to memory of 1388	1200	Explorer.EXE	svchost.exe
PID 1388 wrote to memory of 1360	1388	svchost.exe	cmd.exe
PID 1388 wrote to memory of 1360	1388	svchost.exe	cmd.exe
PID 1388 wrote to memory of 1360	1388	svchost.exe	cmd.exe
PID 1388 wrote to memory of 1360	1388	svchost.exe	cmd.exe
PID 1388 wrote to memory of 612	1388	svchost.exe	Firefox.exe
PID 1388 wrote to memory of 612	1388	svchost.exe	Firefox.exe
PID 1388 wrote to memory of 612	1388	svchost.exe	Firefox.exe
PID 1388 wrote to memory of 612	1388	svchost.exe	Firefox.exe
PID 1388 wrote to memory of 612	1388	svchost.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1200

C:\Users\Admin\AppData\Local\Temp\mgkreERjvr7XiMz.exe
"C:\Users\Admin\AppData\Local\Temp\mgkreERjvr7XiMz.exe"
2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1676

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jlygIECUDei" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB349.tmp"
3⤵
- Creates scheduled task(s)
PID:1808

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:652

C:\Windows\SysWOW64\svchost.exe
"C:\Windows\SysWOW64\svchost.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1388

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
3⤵
PID:1360

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:612

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB349.tmp
Filesize
1KB

MD5
0b5d3509b7eed7bb423d927ec127cc1e

SHA1
142be35d816a0c9639457bf871c75cb7eba1e992

SHA256
2e5a36bda545bb9a1cdbbe8b3200c766fbba0dd4f7e7af5d752d6e3e0d2c70b1

SHA512
6365d0ce9e6f22d69b3c8633f5338fd6bbf721959f222aa93fede4d137b4282cc708c7f7b46f73746042ae1078515e3272ca8c93ffcf37fa08e2b439eabce5e3

Download Submit
C:\Users\Admin\AppData\Roaming\KN5OBP81\KN5logim.jpeg
Filesize
44KB

MD5
7e43d81bb9035c6616c9a119cb457c9d

SHA1
343e97ac058e158063b437c30be7b442cffca445

SHA256
d355f0b6e57c4b6ba0239c82f94b9505a0ad042640cd6a77eb16995637a2c247

SHA512
d06c96b00fb83b6dc235949c0e76ba799c509027f3e01849f798cf93b4a68eb15191e635e1d79336ad5acafbb039702873a205f741f2bd92b63125daa3cc4bfa

Download Submit
C:\Users\Admin\AppData\Roaming\KN5OBP81\KN5logrf.ini
Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\KN5OBP81\KN5logri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\KN5OBP81\KN5logrv.ini
Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/652-59-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/652-58-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/652-61-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/652-62-0x000000000041E2E0-mapping.dmp

Download
memory/652-64-0x00000000008A0000-0x0000000000BA3000-memory.dmp

Filesize
3.0MB

Download
memory/652-65-0x0000000000200000-0x0000000000214000-memory.dmp

Filesize
80KB

Download
memory/1200-66-0x0000000004C20000-0x0000000004D43000-memory.dmp

Filesize
1.1MB

Download
memory/1200-73-0x0000000004D50000-0x0000000004ED6000-memory.dmp

Filesize
1.5MB

Download
memory/1360-68-0x0000000000000000-mapping.dmp

Download
memory/1388-69-0x00000000000C0000-0x00000000000C8000-memory.dmp

Filesize
32KB

Download
memory/1388-70-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/1388-71-0x0000000000920000-0x0000000000C23000-memory.dmp

Filesize
3.0MB

Download
memory/1388-72-0x0000000000550000-0x00000000005E3000-memory.dmp

Filesize
588KB

Download
memory/1388-67-0x0000000000000000-mapping.dmp

Download
memory/1676-54-0x0000000075361000-0x0000000075363000-memory.dmp

Filesize
8KB

Download
memory/1676-55-0x00000000744D0000-0x0000000074A7B000-memory.dmp

Filesize
5.7MB

Download
memory/1808-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads