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/1976-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1976-63-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1976-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1052-73-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader
behavioral1/memory/1052-78-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader

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-1-5-21-4084403625-2215941253-1760665084-1000\Control Panel\International\Geo\Nation	VQC612aN8kkRJe9.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1160 cmd.exe

pid	process
1160	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\H4D0B4P8DLX = "C:\\Program Files (x86)\\Nsdv\\userrfgx.exe"	explorer.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

VQC612aN8kkRJe9.exeVQC612aN8kkRJe9.exeexplorer.exe

description	pid	process	target process
PID 1880 set thread context of 1976	1880	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 1976 set thread context of 1212	1976	VQC612aN8kkRJe9.exe	Explorer.EXE
PID 1052 set thread context of 1212	1052	explorer.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

explorer.exe

description ioc process

File opened for modification C:\Program Files (x86)\Nsdv\userrfgx.exe explorer.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Nsdv\userrfgx.exe	explorer.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-4084403625-2215941253-1760665084-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	explorer.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

VQC612aN8kkRJe9.exeexplorer.exe

pid	process
1976	VQC612aN8kkRJe9.exe
1976	VQC612aN8kkRJe9.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe
1052	explorer.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

VQC612aN8kkRJe9.exeexplorer.exe

pid process

1976 VQC612aN8kkRJe9.exe
1976 VQC612aN8kkRJe9.exe
1976 VQC612aN8kkRJe9.exe
1052 explorer.exe
1052 explorer.exe
1052 explorer.exe
1052 explorer.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

VQC612aN8kkRJe9.exeexplorer.exe

description pid process

Token: SeDebugPrivilege 1976 VQC612aN8kkRJe9.exe
Token: SeDebugPrivilege 1052 explorer.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1976	VQC612aN8kkRJe9.exe
Token: SeDebugPrivilege	1052	explorer.exe

pid	process
1212	Explorer.EXE
1212	Explorer.EXE

pid	process
1212	Explorer.EXE
1212	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

VQC612aN8kkRJe9.exeExplorer.EXEexplorer.exe

description	pid	process	target process
PID 1880 wrote to memory of 1976	1880	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 1880 wrote to memory of 1976	1880	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 1880 wrote to memory of 1976	1880	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 1880 wrote to memory of 1976	1880	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 1880 wrote to memory of 1976	1880	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 1880 wrote to memory of 1976	1880	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 1880 wrote to memory of 1976	1880	VQC612aN8kkRJe9.exe	VQC612aN8kkRJe9.exe
PID 1212 wrote to memory of 1052	1212	Explorer.EXE	explorer.exe
PID 1212 wrote to memory of 1052	1212	Explorer.EXE	explorer.exe
PID 1212 wrote to memory of 1052	1212	Explorer.EXE	explorer.exe
PID 1212 wrote to memory of 1052	1212	Explorer.EXE	explorer.exe
PID 1052 wrote to memory of 1160	1052	explorer.exe	cmd.exe
PID 1052 wrote to memory of 1160	1052	explorer.exe	cmd.exe
PID 1052 wrote to memory of 1160	1052	explorer.exe	cmd.exe
PID 1052 wrote to memory of 1160	1052	explorer.exe	cmd.exe
PID 1052 wrote to memory of 1544	1052	explorer.exe	Firefox.exe
PID 1052 wrote to memory of 1544	1052	explorer.exe	Firefox.exe
PID 1052 wrote to memory of 1544	1052	explorer.exe	Firefox.exe
PID 1052 wrote to memory of 1544	1052	explorer.exe	Firefox.exe
PID 1052 wrote to memory of 1544	1052	explorer.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:1212

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:1880

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:1976

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.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:1052

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\VQC612aN8kkRJe9.exe"
3⤵
- Deletes itself
PID:1160

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1544

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

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Downloads

memory/1052-76-0x00000000020A0000-0x0000000002130000-memory.dmp

Filesize
576KB

Download
memory/1052-72-0x0000000000590000-0x0000000000811000-memory.dmp

Filesize
2.5MB

Download
memory/1052-71-0x0000000074F11000-0x0000000074F13000-memory.dmp

Filesize
8KB

Download
memory/1052-69-0x0000000000000000-mapping.dmp

Download
memory/1052-73-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/1052-75-0x0000000002290000-0x0000000002593000-memory.dmp

Filesize
3.0MB

Download
memory/1052-78-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/1160-74-0x0000000000000000-mapping.dmp

Download
memory/1212-68-0x0000000005FC0000-0x000000000612B000-memory.dmp

Filesize
1.4MB

Download
memory/1212-77-0x0000000003F10000-0x0000000004006000-memory.dmp

Filesize
984KB

Download
memory/1212-79-0x0000000003F10000-0x0000000004006000-memory.dmp

Filesize
984KB

Download
memory/1880-54-0x00000000001B0000-0x0000000000246000-memory.dmp

Filesize
600KB

Download
memory/1880-58-0x0000000002120000-0x0000000002152000-memory.dmp

Filesize
200KB

Download
memory/1880-57-0x0000000004A50000-0x0000000004AD4000-memory.dmp

Filesize
528KB

Download
memory/1880-56-0x0000000000390000-0x000000000039A000-memory.dmp

Filesize
40KB

Download
memory/1880-55-0x0000000075C41000-0x0000000075C43000-memory.dmp

Filesize
8KB

Download
memory/1976-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1976-67-0x0000000000150000-0x0000000000161000-memory.dmp

Filesize
68KB

Download
memory/1976-66-0x0000000000AE0000-0x0000000000DE3000-memory.dmp

Filesize
3.0MB

Download
memory/1976-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1976-63-0x000000000041F6F0-mapping.dmp

Download
memory/1976-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1976-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads