formbook | 72fd8d816c54cacc80a7364d61fccfb6f4c2b9a88ed0cb9296e038b615731cfb

General

Target

VQC612aN8kkRJe9.exe
Size

578KB
MD5

2424734321f03e8048202f10ba707c29
SHA1

e085ae7d3b35f036ebf49076869203a29d9db3c0
SHA256

72fd8d816c54cacc80a7364d61fccfb6f4c2b9a88ed0cb9296e038b615731cfb
SHA512

1208d8b231775575cfc360a16fe0d93bbe888253377ac350091d249b9041272f66bd32476c2db9931e4bd34e238a1bc656ad03fffc0480a1cb365ebd705a5b7d

Score

10^/10

formbook xloader zzun loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

zzun

Decoy

JnNtRHyNupy0GqRzAcasu7hb4rc=

Qv593NGLE7p9UNSaVkPXljAJm2QCNnc=

ePArIFWvjkkMgVEVhw4M4Jk=

26rqUwJ7dD0AiDI=

pBAxMHeK741QFw==

kHD7TPt5846pUMTX

56UnjFjHL1i0j659h3LymRnHpQj+SshC

4vKlKHflPqmWXRbrRwfPtrhb4rc=

6LBd4qButFAi

phMzGll8Ue7Fu+inq5cdnPaSugG3

NKswiQGCvZoG5FgsdHEI

rtTHnuUY8M1qVcXV

SOmECrlAt2oGAA==

L1ep9adutFAi

/UE+/AyvE6uEl28weFI=

IP+xMPQxJR4NE6TK

xvW5GN9/rqA5YUoOVt185Sf7Uw==

fRFNW9DhxL6VF7LA

KFYTfkaY741QFw==

W4JGvMBmt2oGAA==

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

Xloader payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/984-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/984-63-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/984-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1468-73-0x00000000000D0000-0x00000000000FC000-memory.dmp	xloader
behavioral1/memory/1468-77-0x00000000000D0000-0x00000000000FC000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\XJKDUFP8DN = "C:\\Program Files (x86)\\Oyhlx\\gdicf2.exe"	msiexec.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

VQC612aN8kkRJe9.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Control Panel\International\Geo\Nation	VQC612aN8kkRJe9.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1332 cmd.exe

pid	process
1332	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

VQC612aN8kkRJe9.exeVQC612aN8kkRJe9.exemsiexec.exe

description	pid	process	target process
PID 2020 set thread context of 984	2020	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 984 set thread context of 1200	984	VQC612aN8kkRJe9.exe	Explorer.EXE
PID 1468 set thread context of 1200	1468	msiexec.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

msiexec.exe

description ioc process

File opened for modification C:\Program Files (x86)\Oyhlx\gdicf2.exe msiexec.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Oyhlx\gdicf2.exe	msiexec.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3762437355-3468409815-1164039494-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msiexec.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

VQC612aN8kkRJe9.exemsiexec.exe

pid	process
984	VQC612aN8kkRJe9.exe
984	VQC612aN8kkRJe9.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe
1468	msiexec.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

VQC612aN8kkRJe9.exemsiexec.exe

pid process

984 VQC612aN8kkRJe9.exe
984 VQC612aN8kkRJe9.exe
984 VQC612aN8kkRJe9.exe
1468 msiexec.exe
1468 msiexec.exe
1468 msiexec.exe
1468 msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

VQC612aN8kkRJe9.exemsiexec.exe

description pid process

Token: SeDebugPrivilege 984 VQC612aN8kkRJe9.exe
Token: SeDebugPrivilege 1468 msiexec.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

description	pid	process
Token: SeDebugPrivilege	984	VQC612aN8kkRJe9.exe
Token: SeDebugPrivilege	1468	msiexec.exe

pid	process
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

VQC612aN8kkRJe9.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 2020 wrote to memory of 984	2020	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 2020 wrote to memory of 984	2020	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 2020 wrote to memory of 984	2020	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 2020 wrote to memory of 984	2020	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 2020 wrote to memory of 984	2020	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 2020 wrote to memory of 984	2020	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 2020 wrote to memory of 984	2020	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 1200 wrote to memory of 1468	1200	Explorer.EXE	msiexec.exe
PID 1200 wrote to memory of 1468	1200	Explorer.EXE	msiexec.exe
PID 1200 wrote to memory of 1468	1200	Explorer.EXE	msiexec.exe
PID 1200 wrote to memory of 1468	1200	Explorer.EXE	msiexec.exe
PID 1200 wrote to memory of 1468	1200	Explorer.EXE	msiexec.exe
PID 1200 wrote to memory of 1468	1200	Explorer.EXE	msiexec.exe
PID 1200 wrote to memory of 1468	1200	Explorer.EXE	msiexec.exe
PID 1468 wrote to memory of 1332	1468	msiexec.exe	cmd.exe
PID 1468 wrote to memory of 1332	1468	msiexec.exe	cmd.exe
PID 1468 wrote to memory of 1332	1468	msiexec.exe	cmd.exe
PID 1468 wrote to memory of 1332	1468	msiexec.exe	cmd.exe
PID 1468 wrote to memory of 1780	1468	msiexec.exe	Firefox.exe
PID 1468 wrote to memory of 1780	1468	msiexec.exe	Firefox.exe
PID 1468 wrote to memory of 1780	1468	msiexec.exe	Firefox.exe
PID 1468 wrote to memory of 1780	1468	msiexec.exe	Firefox.exe
PID 1468 wrote to memory of 1780	1468	msiexec.exe	Firefox.exe

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

C:\Users\Admin\AppData\Local\Temp\VQC612aN8kkRJe9.exe
"C:\Users\Admin\AppData\Local\Temp\VQC612aN8kkRJe9.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2020

C:\Users\Admin\AppData\Local\Temp\VQC612aN8kkRJe9.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:984

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.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:1468

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\VQC612aN8kkRJe9.exe"
3⤵
- Deletes itself
PID:1332

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1780

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

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/984-67-0x0000000000180000-0x0000000000191000-memory.dmp

Filesize
68KB

Download
memory/984-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/984-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/984-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/984-63-0x000000000041F6F0-mapping.dmp

Download
memory/984-66-0x0000000000BF0000-0x0000000000EF3000-memory.dmp

Filesize
3.0MB

Download
memory/984-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1200-68-0x00000000049F0000-0x0000000004B66000-memory.dmp

Filesize
1.5MB

Download
memory/1200-76-0x0000000004B70000-0x0000000004C72000-memory.dmp

Filesize
1.0MB

Download
memory/1200-78-0x0000000004B70000-0x0000000004C72000-memory.dmp

Filesize
1.0MB

Download
memory/1332-71-0x0000000000000000-mapping.dmp

Download
memory/1468-73-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/1468-69-0x0000000000000000-mapping.dmp

Download
memory/1468-72-0x0000000000920000-0x0000000000934000-memory.dmp

Filesize
80KB

Download
memory/1468-74-0x00000000020A0000-0x00000000023A3000-memory.dmp

Filesize
3.0MB

Download
memory/1468-75-0x0000000001FB0000-0x0000000002040000-memory.dmp

Filesize
576KB

Download
memory/1468-77-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/2020-56-0x0000000000270000-0x000000000027A000-memory.dmp

Filesize
40KB

Download
memory/2020-58-0x0000000000980000-0x00000000009B2000-memory.dmp

Filesize
200KB

Download
memory/2020-55-0x0000000075BF1000-0x0000000075BF3000-memory.dmp

Filesize
8KB

Download
memory/2020-57-0x00000000050E0000-0x0000000005164000-memory.dmp

Filesize
528KB

Download
memory/2020-54-0x0000000000B50000-0x0000000000BE6000-memory.dmp

Filesize
600KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads