formbook | eec96529834b477322282fdc1f9a976905677cd0e57389b81fd7039247515568

General

Target

UPStracking0940292.exe
Size

256KB
MD5

ecad1092417fae79942a0022ce770621
SHA1

661d76ff20089a6926c95a934b4619baefd230c5
SHA256

86ccf51a612ccf7c07b1e356636e236abca7bd99b3176e983d777f07fde6a757
SHA512

9a428228b6f66d3cd200f698e910c1c0a88f361638a47891a6a5eb59871e536d07f5607483cee31d810984af509f293b09a77261b766ea957bba449de21207e7

Score

10^/10

formbook xloader dhua loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

dhua

C2

http://www.segurosramosroman.com/dhua/

Decoy

ketostar.club

icanmakeyoufamous.com

claimygdejection.com

garlicinterestedparent.xyz

bits-clicks.com

030atk.xyz

ballwiegand.com

logs-illumidesk.com

785686.com

flnewsfeed.com

transporteshrj.net

agenciamundodigital.online

bowersllc.com

urchncenw.com

wuauwuaumx.com

littlesportsacademy.com

xn--m3chb3ax0abdta3fwhk.com

prmarketings.com

jiaozhanlianmeng.com

whenisthestore.space

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/788-115-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/788-116-0x000000000041D4E0-mapping.dmp	xloader
behavioral2/memory/996-123-0x0000000002BA0000-0x0000000002BC9000-memory.dmp	xloader
behavioral2/memory/3908-133-0x000000000041D4E0-mapping.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cmd.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmd.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\PB6HZLD87VJ = "C:\\Program Files (x86)\\Zutmlgjwp\\yrv8fljf8r6.exe"	cmd.exe

Executes dropped EXE 2 IoCs

Processes:

yrv8fljf8r6.exeyrv8fljf8r6.exe

pid process

2216 yrv8fljf8r6.exe
3908 yrv8fljf8r6.exe
Loads dropped DLL 2 IoCs

Processes:

UPStracking0940292.exeyrv8fljf8r6.exe

pid process

568 UPStracking0940292.exe
2216 yrv8fljf8r6.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

pid	process
2216	yrv8fljf8r6.exe
3908	yrv8fljf8r6.exe

pid	process
568	UPStracking0940292.exe
2216	yrv8fljf8r6.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

UPStracking0940292.exeUPStracking0940292.execmd.exeyrv8fljf8r6.exe

description	pid	process	target process
PID 568 set thread context of 788	568	UPStracking0940292.exe	UPStracking0940292.exe
PID 788 set thread context of 2708	788	UPStracking0940292.exe	Explorer.EXE
PID 996 set thread context of 2708	996	cmd.exe	Explorer.EXE
PID 2216 set thread context of 3908	2216	yrv8fljf8r6.exe	yrv8fljf8r6.exe

Drops file in Program Files directory 4 IoCs

Processes:

cmd.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe	cmd.exe
File opened for modification	C:\Program Files (x86)\Zutmlgjwp	Explorer.EXE
File created	C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

NSIS installer 6 IoCs

installer

Processes:

resource	yara_rule
C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe	nsis_installer_1
C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe	nsis_installer_2
C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe	nsis_installer_1
C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe	nsis_installer_2
C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe	nsis_installer_1
C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe	nsis_installer_2

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmd.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmd.exe

Modifies registry class 2 IoCs

Processes:

Explorer.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

UPStracking0940292.execmd.exeyrv8fljf8r6.exe

pid	process
788	UPStracking0940292.exe
788	UPStracking0940292.exe
788	UPStracking0940292.exe
788	UPStracking0940292.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
3908	yrv8fljf8r6.exe
3908	yrv8fljf8r6.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe
996	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2708 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

UPStracking0940292.execmd.exe

pid process

788 UPStracking0940292.exe
788 UPStracking0940292.exe
788 UPStracking0940292.exe
996 cmd.exe
996 cmd.exe
996 cmd.exe
996 cmd.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

Processes:

UPStracking0940292.execmd.exeExplorer.EXEyrv8fljf8r6.exe

description	pid	process
Token: SeDebugPrivilege	788	UPStracking0940292.exe
Token: SeDebugPrivilege	996	cmd.exe
Token: SeShutdownPrivilege	2708	Explorer.EXE
Token: SeCreatePagefilePrivilege	2708	Explorer.EXE
Token: SeShutdownPrivilege	2708	Explorer.EXE
Token: SeCreatePagefilePrivilege	2708	Explorer.EXE
Token: SeShutdownPrivilege	2708	Explorer.EXE
Token: SeCreatePagefilePrivilege	2708	Explorer.EXE
Token: SeShutdownPrivilege	2708	Explorer.EXE
Token: SeCreatePagefilePrivilege	2708	Explorer.EXE
Token: SeShutdownPrivilege	2708	Explorer.EXE
Token: SeCreatePagefilePrivilege	2708	Explorer.EXE
Token: SeShutdownPrivilege	2708	Explorer.EXE
Token: SeCreatePagefilePrivilege	2708	Explorer.EXE
Token: SeDebugPrivilege	3908	yrv8fljf8r6.exe
Token: SeShutdownPrivilege	2708	Explorer.EXE
Token: SeCreatePagefilePrivilege	2708	Explorer.EXE

Suspicious use of FindShellTrayWindow 8 IoCs

Processes:

Explorer.EXE

pid process

2708 Explorer.EXE
2708 Explorer.EXE
2708 Explorer.EXE
2708 Explorer.EXE
2708 Explorer.EXE
2708 Explorer.EXE
2708 Explorer.EXE
2708 Explorer.EXE

Suspicious use of SendNotifyMessage 11 IoCs

Processes:

Explorer.EXE

pid	process
2708	Explorer.EXE
2708	Explorer.EXE
2708	Explorer.EXE
2708	Explorer.EXE
2708	Explorer.EXE
2708	Explorer.EXE
2708	Explorer.EXE
2708	Explorer.EXE
2708	Explorer.EXE
2708	Explorer.EXE
2708	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

UPStracking0940292.exeExplorer.EXEcmd.exeyrv8fljf8r6.exe

description	pid	process	target process
PID 568 wrote to memory of 788	568	UPStracking0940292.exe	UPStracking0940292.exe
PID 568 wrote to memory of 788	568	UPStracking0940292.exe	UPStracking0940292.exe
PID 568 wrote to memory of 788	568	UPStracking0940292.exe	UPStracking0940292.exe
PID 568 wrote to memory of 788	568	UPStracking0940292.exe	UPStracking0940292.exe
PID 568 wrote to memory of 788	568	UPStracking0940292.exe	UPStracking0940292.exe
PID 568 wrote to memory of 788	568	UPStracking0940292.exe	UPStracking0940292.exe
PID 2708 wrote to memory of 996	2708	Explorer.EXE	cmd.exe
PID 2708 wrote to memory of 996	2708	Explorer.EXE	cmd.exe
PID 2708 wrote to memory of 996	2708	Explorer.EXE	cmd.exe
PID 996 wrote to memory of 8	996	cmd.exe	cmd.exe
PID 996 wrote to memory of 8	996	cmd.exe	cmd.exe
PID 996 wrote to memory of 8	996	cmd.exe	cmd.exe
PID 996 wrote to memory of 3736	996	cmd.exe	Firefox.exe
PID 996 wrote to memory of 3736	996	cmd.exe	Firefox.exe
PID 2708 wrote to memory of 2216	2708	Explorer.EXE	yrv8fljf8r6.exe
PID 2708 wrote to memory of 2216	2708	Explorer.EXE	yrv8fljf8r6.exe
PID 2708 wrote to memory of 2216	2708	Explorer.EXE	yrv8fljf8r6.exe
PID 2216 wrote to memory of 3908	2216	yrv8fljf8r6.exe	yrv8fljf8r6.exe
PID 2216 wrote to memory of 3908	2216	yrv8fljf8r6.exe	yrv8fljf8r6.exe
PID 2216 wrote to memory of 3908	2216	yrv8fljf8r6.exe	yrv8fljf8r6.exe
PID 2216 wrote to memory of 3908	2216	yrv8fljf8r6.exe	yrv8fljf8r6.exe
PID 2216 wrote to memory of 3908	2216	yrv8fljf8r6.exe	yrv8fljf8r6.exe
PID 2216 wrote to memory of 3908	2216	yrv8fljf8r6.exe	yrv8fljf8r6.exe
PID 996 wrote to memory of 3736	996	cmd.exe	Firefox.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

cmd.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer cmd.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2708

C:\Users\Admin\AppData\Local\Temp\UPStracking0940292.exe
"C:\Users\Admin\AppData\Local\Temp\UPStracking0940292.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:568

C:\Users\Admin\AppData\Local\Temp\UPStracking0940292.exe
"C:\Users\Admin\AppData\Local\Temp\UPStracking0940292.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:788

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\SysWOW64\cmd.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
- System policy modification
PID:996

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\UPStracking0940292.exe"
3⤵
PID:8

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3736

C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe
"C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2216

C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe
"C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3908

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe
MD5
ecad1092417fae79942a0022ce770621

SHA1
661d76ff20089a6926c95a934b4619baefd230c5

SHA256
86ccf51a612ccf7c07b1e356636e236abca7bd99b3176e983d777f07fde6a757

SHA512
9a428228b6f66d3cd200f698e910c1c0a88f361638a47891a6a5eb59871e536d07f5607483cee31d810984af509f293b09a77261b766ea957bba449de21207e7

Download Submit
C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe
MD5
ecad1092417fae79942a0022ce770621

SHA1
661d76ff20089a6926c95a934b4619baefd230c5

SHA256
86ccf51a612ccf7c07b1e356636e236abca7bd99b3176e983d777f07fde6a757

SHA512
9a428228b6f66d3cd200f698e910c1c0a88f361638a47891a6a5eb59871e536d07f5607483cee31d810984af509f293b09a77261b766ea957bba449de21207e7

Download Submit
C:\Program Files (x86)\Zutmlgjwp\yrv8fljf8r6.exe
MD5
ecad1092417fae79942a0022ce770621

SHA1
661d76ff20089a6926c95a934b4619baefd230c5

SHA256
86ccf51a612ccf7c07b1e356636e236abca7bd99b3176e983d777f07fde6a757

SHA512
9a428228b6f66d3cd200f698e910c1c0a88f361638a47891a6a5eb59871e536d07f5607483cee31d810984af509f293b09a77261b766ea957bba449de21207e7

Download Submit
C:\Users\Admin\AppData\Local\Temp\kk3ingy62g95a4edy
MD5
0e99a6626fbe1f9cc3075ebe4ae0307e

SHA1
4dde1fcbdb2968ea41f2ab515adfe1da5824b795

SHA256
44853e5be595d6024247433fd44979510ca819dcab128e09296fbb71f2fd2f79

SHA512
560b8b8d208f2bd01ac6dbdba8159b0a08eef8f2c73cbd2e6c607cf79ef298178a7fac41728192b08f593247d3b38257f13c19dcb96ac78174f5b2ebbf98d912

Download Submit
\Users\Admin\AppData\Local\Temp\nsh4B34.tmp\zflbzcl.dll
MD5
0200fe8ceab8e27bcdeec801d6e8910f

SHA1
255d5d2a8b7893d456fe6181764e52558d89834c

SHA256
d454fb68308a5bdfb263da7b4dad9c9a074af50e4bb9ac4fd9d5231aa65eaced

SHA512
71b862e4530f72c3cbf05d413ad25825670819da2454e9049338e4cb823384f47c96a140891070d9818758b11ef6bf7abd820920844e9faf9d3bb333c3687036

Download Submit
\Users\Admin\AppData\Local\Temp\nsw5AED.tmp\zflbzcl.dll
MD5
0200fe8ceab8e27bcdeec801d6e8910f

SHA1
255d5d2a8b7893d456fe6181764e52558d89834c

SHA256
d454fb68308a5bdfb263da7b4dad9c9a074af50e4bb9ac4fd9d5231aa65eaced

SHA512
71b862e4530f72c3cbf05d413ad25825670819da2454e9049338e4cb823384f47c96a140891070d9818758b11ef6bf7abd820920844e9faf9d3bb333c3687036

Download Submit
memory/8-121-0x0000000000000000-mapping.dmp

Download
memory/788-118-0x0000000000E40000-0x0000000000E51000-memory.dmp

Filesize
68KB

Download
memory/788-117-0x00000000009D0000-0x0000000000CF0000-memory.dmp

Filesize
3.1MB

Download
memory/788-116-0x000000000041D4E0-mapping.dmp

Download
memory/788-115-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/996-123-0x0000000002BA0000-0x0000000002BC9000-memory.dmp

Filesize
164KB

Download
memory/996-122-0x0000000000A10000-0x0000000000A69000-memory.dmp

Filesize
356KB

Download
memory/996-124-0x0000000003570000-0x0000000003890000-memory.dmp

Filesize
3.1MB

Download
memory/996-125-0x00000000034C0000-0x0000000003550000-memory.dmp

Filesize
576KB

Download
memory/996-120-0x0000000000000000-mapping.dmp

Download
memory/2216-127-0x0000000000000000-mapping.dmp

Download
memory/2708-126-0x0000000000840000-0x00000000008DC000-memory.dmp

Filesize
624KB

Download
memory/2708-119-0x0000000006810000-0x000000000693E000-memory.dmp

Filesize
1.2MB

Download
memory/3736-135-0x0000000000000000-mapping.dmp

Download
memory/3736-137-0x00007FF6E6760000-0x00007FF6E67F3000-memory.dmp

Filesize
588KB

Download
memory/3736-138-0x000001E2A3360000-0x000001E2A34B7000-memory.dmp

Filesize
1.3MB

Download
memory/3908-133-0x000000000041D4E0-mapping.dmp

Download
memory/3908-136-0x00000000009B0000-0x0000000000CD0000-memory.dmp

Filesize
3.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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