formbook | 68ac6f0ad7bce72b24cd1ed92e0ddeace4268c51281bfe030c4b8c3f38af6ec7

General

Target

KRD2020000000002 PDF.exe
Size

735KB
MD5

4e904adeaaeac677885bbe4c6be06a3a
SHA1

48fe1138bb8323fa29f5b9d7b8e02a97dc0c9afa
SHA256

d104548b154ac28142944b839993b9f0c8ad45d42a3e72d888aa8ba0e22562fd
SHA512

2803b5a5b4cab020a2a3bb1861601633ec8041a20946cd6f8fc57f5a936bf1f535ec3dc2a597c60f360ad4cc2a45f97b372be04351c9ac30ec9a053804e696ef

Score

10^/10

formbook hnh evasion persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

hnh

Decoy

stackingplans.info

landscapingcanberra.com

apxlegal.com

gzajs.com

senladvocaten.com

stephanieabella.com

indivmgtsvc.com

wildlife-botanicals.com

fingrfull.com

ustar-electric.com

timesharebefree.com

safefirstresponder.com

giliticketoperator.com

silverstarscents.com

4752condordrive.info

joomak.net

new-auto-news.com

ottodesign.store

kxg01.com

chrisoncreation.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2764-139-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/688-146-0x00000000014B0000-0x00000000014DD000-memory.dmp	formbook

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
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:

KRD2020000000002 PDF.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	KRD2020000000002 PDF.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	KRD2020000000002 PDF.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

WWAHost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ITQLRT20UH = "C:\\Program Files (x86)\\Or8oxv4bp\\5jbxnrlftpehsp.exe"	WWAHost.exe
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	WWAHost.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:

KRD2020000000002 PDF.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	KRD2020000000002 PDF.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	KRD2020000000002 PDF.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

KRD2020000000002 PDF.exeKRD2020000000002 PDF.exeWWAHost.exe

description	pid	process	target process
PID 3456 set thread context of 2764	3456	KRD2020000000002 PDF.exe	KRD2020000000002 PDF.exe
PID 2764 set thread context of 2560	2764	KRD2020000000002 PDF.exe	Explorer.EXE
PID 688 set thread context of 2560	688	WWAHost.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

WWAHost.exe

description ioc process

File opened for modification C:\Program Files (x86)\Or8oxv4bp\5jbxnrlftpehsp.exe WWAHost.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Or8oxv4bp\5jbxnrlftpehsp.exe	WWAHost.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

WWAHost.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	WWAHost.exe

Suspicious behavior: EnumeratesProcesses 33 IoCs

Processes:

KRD2020000000002 PDF.exeKRD2020000000002 PDF.exeWWAHost.exe

pid	process
3456	KRD2020000000002 PDF.exe
3456	KRD2020000000002 PDF.exe
3456	KRD2020000000002 PDF.exe
2764	KRD2020000000002 PDF.exe
2764	KRD2020000000002 PDF.exe
2764	KRD2020000000002 PDF.exe
2764	KRD2020000000002 PDF.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2560 Explorer.EXE

pid	process
2560	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

KRD2020000000002 PDF.exeWWAHost.exe

pid	process
2764	KRD2020000000002 PDF.exe
2764	KRD2020000000002 PDF.exe
2764	KRD2020000000002 PDF.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe
688	WWAHost.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

KRD2020000000002 PDF.exeKRD2020000000002 PDF.exeWWAHost.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3456	KRD2020000000002 PDF.exe
Token: SeDebugPrivilege	2764	KRD2020000000002 PDF.exe
Token: SeDebugPrivilege	688	WWAHost.exe
Token: SeShutdownPrivilege	2560	Explorer.EXE
Token: SeCreatePagefilePrivilege	2560	Explorer.EXE
Token: SeShutdownPrivilege	2560	Explorer.EXE
Token: SeCreatePagefilePrivilege	2560	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

KRD2020000000002 PDF.exeExplorer.EXEWWAHost.exe

description	pid	process	target process
PID 3456 wrote to memory of 1680	3456	KRD2020000000002 PDF.exe	KRD2020000000002 PDF.exe
PID 3456 wrote to memory of 1680	3456	KRD2020000000002 PDF.exe	KRD2020000000002 PDF.exe
PID 3456 wrote to memory of 1680	3456	KRD2020000000002 PDF.exe	KRD2020000000002 PDF.exe
PID 3456 wrote to memory of 2764	3456	KRD2020000000002 PDF.exe	KRD2020000000002 PDF.exe
PID 3456 wrote to memory of 2764	3456	KRD2020000000002 PDF.exe	KRD2020000000002 PDF.exe
PID 3456 wrote to memory of 2764	3456	KRD2020000000002 PDF.exe	KRD2020000000002 PDF.exe
PID 3456 wrote to memory of 2764	3456	KRD2020000000002 PDF.exe	KRD2020000000002 PDF.exe
PID 3456 wrote to memory of 2764	3456	KRD2020000000002 PDF.exe	KRD2020000000002 PDF.exe
PID 3456 wrote to memory of 2764	3456	KRD2020000000002 PDF.exe	KRD2020000000002 PDF.exe
PID 2560 wrote to memory of 688	2560	Explorer.EXE	WWAHost.exe
PID 2560 wrote to memory of 688	2560	Explorer.EXE	WWAHost.exe
PID 2560 wrote to memory of 688	2560	Explorer.EXE	WWAHost.exe
PID 688 wrote to memory of 2300	688	WWAHost.exe	cmd.exe
PID 688 wrote to memory of 2300	688	WWAHost.exe	cmd.exe
PID 688 wrote to memory of 2300	688	WWAHost.exe	cmd.exe
PID 688 wrote to memory of 5044	688	WWAHost.exe	cmd.exe
PID 688 wrote to memory of 5044	688	WWAHost.exe	cmd.exe
PID 688 wrote to memory of 5044	688	WWAHost.exe	cmd.exe
PID 688 wrote to memory of 2988	688	WWAHost.exe	Firefox.exe
PID 688 wrote to memory of 2988	688	WWAHost.exe	Firefox.exe
PID 688 wrote to memory of 2988	688	WWAHost.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2560

C:\Users\Admin\AppData\Local\Temp\KRD2020000000002 PDF.exe
"C:\Users\Admin\AppData\Local\Temp\KRD2020000000002 PDF.exe"
2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3456

C:\Users\Admin\AppData\Local\Temp\KRD2020000000002 PDF.exe
"C:\Users\Admin\AppData\Local\Temp\KRD2020000000002 PDF.exe"
3⤵
PID:1680

C:\Users\Admin\AppData\Local\Temp\KRD2020000000002 PDF.exe
"C:\Users\Admin\AppData\Local\Temp\KRD2020000000002 PDF.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2764

C:\Windows\SysWOW64\WWAHost.exe
"C:\Windows\SysWOW64\WWAHost.exe"
2⤵
- Adds 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:688

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\KRD2020000000002 PDF.exe"
3⤵
PID:2300

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:5044

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:2988

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

1

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
memory/688-149-0x0000000001E50000-0x0000000001EE3000-memory.dmp

Filesize
588KB

Download
memory/688-148-0x0000000001FB0000-0x00000000022FA000-memory.dmp

Filesize
3.3MB

Download
memory/688-146-0x00000000014B0000-0x00000000014DD000-memory.dmp

Filesize
180KB

Download
memory/688-145-0x0000000000850000-0x000000000092C000-memory.dmp

Filesize
880KB

Download
memory/688-144-0x0000000000000000-mapping.dmp

Download
memory/1680-137-0x0000000000000000-mapping.dmp

Download
memory/2300-147-0x0000000000000000-mapping.dmp

Download
memory/2560-143-0x0000000002DA0000-0x0000000002E7F000-memory.dmp

Filesize
892KB

Download
memory/2560-150-0x0000000007C40000-0x0000000007D42000-memory.dmp

Filesize
1.0MB

Download
memory/2764-141-0x0000000001440000-0x000000000178A000-memory.dmp

Filesize
3.3MB

Download
memory/2764-142-0x0000000000F40000-0x0000000000F54000-memory.dmp

Filesize
80KB

Download
memory/2764-139-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2764-138-0x0000000000000000-mapping.dmp

Download
memory/3456-130-0x00000000006C0000-0x000000000077C000-memory.dmp

Filesize
752KB

Download
memory/3456-136-0x0000000006180000-0x00000000061E6000-memory.dmp

Filesize
408KB

Download
memory/3456-135-0x00000000053B0000-0x0000000005406000-memory.dmp

Filesize
344KB

Download
memory/3456-134-0x0000000005110000-0x000000000511A000-memory.dmp

Filesize
40KB

Download
memory/3456-133-0x0000000005220000-0x00000000052B2000-memory.dmp

Filesize
584KB

Download
memory/3456-132-0x00000000057D0000-0x0000000005D74000-memory.dmp

Filesize
5.6MB

Download
memory/3456-131-0x0000000005180000-0x000000000521C000-memory.dmp

Filesize
624KB

Download
memory/5044-151-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads