formbook | 554c0655405441fc527ba1d0393c1bb6fb4b3d1925b50821dee1c7810f402c71

General

Target

fJvwDbVyiI8EOEk.exe
Size

575KB
MD5

78fd3b99caf88ac2ece715e72c0eaf56
SHA1

f581b9bfec6e14a7e8e0fcfb399686dc556b50eb
SHA256

554c0655405441fc527ba1d0393c1bb6fb4b3d1925b50821dee1c7810f402c71
SHA512

f20033fe26630195c18c6d7e5514edf1afd559215605de7ed2111e00f110e786ec175e2833de32fb28d539ff4421a41138941fed3cd209d9a090defd5d9842f0

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/1904-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1904-63-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1904-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1100-73-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/1100-77-0x0000000000080000-0x00000000000AC000-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:

fJvwDbVyiI8EOEk.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Control Panel\International\Geo\Nation	fJvwDbVyiI8EOEk.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1168 cmd.exe

pid	process
1168	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ipconfig.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	ipconfig.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ODPHLLGH = "C:\\Program Files (x86)\\Md6qlwvrx\\winjr8xnt2h.exe"	ipconfig.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

fJvwDbVyiI8EOEk.exefJvwDbVyiI8EOEk.exeipconfig.exe

description	pid	process	target process
PID 1936 set thread context of 1904	1936	fJvwDbVyiI8EOEk.exe	fJvwDbVyiI8EOEk.exe
PID 1904 set thread context of 1380	1904	fJvwDbVyiI8EOEk.exe	Explorer.EXE
PID 1100 set thread context of 1380	1100	ipconfig.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

ipconfig.exe

description ioc process

File opened for modification C:\Program Files (x86)\Md6qlwvrx\winjr8xnt2h.exe ipconfig.exe
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

ipconfig.exe

pid process

1100 ipconfig.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Md6qlwvrx\winjr8xnt2h.exe	ipconfig.exe

pid	process
1100	ipconfig.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

ipconfig.exe

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

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

fJvwDbVyiI8EOEk.exeipconfig.exe

pid	process
1904	fJvwDbVyiI8EOEk.exe
1904	fJvwDbVyiI8EOEk.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe
1100	ipconfig.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

fJvwDbVyiI8EOEk.exeipconfig.exe

pid process

1904 fJvwDbVyiI8EOEk.exe
1904 fJvwDbVyiI8EOEk.exe
1904 fJvwDbVyiI8EOEk.exe
1100 ipconfig.exe
1100 ipconfig.exe
1100 ipconfig.exe
1100 ipconfig.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

fJvwDbVyiI8EOEk.exeipconfig.exe

description pid process

Token: SeDebugPrivilege 1904 fJvwDbVyiI8EOEk.exe
Token: SeDebugPrivilege 1100 ipconfig.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1380 Explorer.EXE
1380 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1380 Explorer.EXE
1380 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1904	fJvwDbVyiI8EOEk.exe
Token: SeDebugPrivilege	1100	ipconfig.exe

pid	process
1380	Explorer.EXE
1380	Explorer.EXE

pid	process
1380	Explorer.EXE
1380	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

fJvwDbVyiI8EOEk.exeExplorer.EXEipconfig.exe

description	pid	process	target process
PID 1936 wrote to memory of 1904	1936	fJvwDbVyiI8EOEk.exe	fJvwDbVyiI8EOEk.exe
PID 1936 wrote to memory of 1904	1936	fJvwDbVyiI8EOEk.exe	fJvwDbVyiI8EOEk.exe
PID 1936 wrote to memory of 1904	1936	fJvwDbVyiI8EOEk.exe	fJvwDbVyiI8EOEk.exe
PID 1936 wrote to memory of 1904	1936	fJvwDbVyiI8EOEk.exe	fJvwDbVyiI8EOEk.exe
PID 1936 wrote to memory of 1904	1936	fJvwDbVyiI8EOEk.exe	fJvwDbVyiI8EOEk.exe
PID 1936 wrote to memory of 1904	1936	fJvwDbVyiI8EOEk.exe	fJvwDbVyiI8EOEk.exe
PID 1936 wrote to memory of 1904	1936	fJvwDbVyiI8EOEk.exe	fJvwDbVyiI8EOEk.exe
PID 1380 wrote to memory of 1100	1380	Explorer.EXE	ipconfig.exe
PID 1380 wrote to memory of 1100	1380	Explorer.EXE	ipconfig.exe
PID 1380 wrote to memory of 1100	1380	Explorer.EXE	ipconfig.exe
PID 1380 wrote to memory of 1100	1380	Explorer.EXE	ipconfig.exe
PID 1100 wrote to memory of 1168	1100	ipconfig.exe	cmd.exe
PID 1100 wrote to memory of 1168	1100	ipconfig.exe	cmd.exe
PID 1100 wrote to memory of 1168	1100	ipconfig.exe	cmd.exe
PID 1100 wrote to memory of 1168	1100	ipconfig.exe	cmd.exe
PID 1100 wrote to memory of 1600	1100	ipconfig.exe	Firefox.exe
PID 1100 wrote to memory of 1600	1100	ipconfig.exe	Firefox.exe
PID 1100 wrote to memory of 1600	1100	ipconfig.exe	Firefox.exe
PID 1100 wrote to memory of 1600	1100	ipconfig.exe	Firefox.exe
PID 1100 wrote to memory of 1600	1100	ipconfig.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:1380

C:\Users\Admin\AppData\Local\Temp\fJvwDbVyiI8EOEk.exe
"C:\Users\Admin\AppData\Local\Temp\fJvwDbVyiI8EOEk.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1936

C:\Users\Admin\AppData\Local\Temp\fJvwDbVyiI8EOEk.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1904

C:\Windows\SysWOW64\ipconfig.exe
"C:\Windows\SysWOW64\ipconfig.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Gathers network information
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1100

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\fJvwDbVyiI8EOEk.exe"
3⤵
- Deletes itself
PID:1168

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1600

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

1

T1059

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

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1100-77-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1100-75-0x0000000001E20000-0x0000000001EB0000-memory.dmp

Filesize
576KB

Download
memory/1100-74-0x0000000001FC0000-0x00000000022C3000-memory.dmp

Filesize
3.0MB

Download
memory/1100-73-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1100-72-0x0000000000440000-0x000000000044A000-memory.dmp

Filesize
40KB

Download
memory/1100-69-0x0000000000000000-mapping.dmp

Download
memory/1168-71-0x0000000000000000-mapping.dmp

Download
memory/1380-68-0x0000000006B20000-0x0000000006C5A000-memory.dmp

Filesize
1.2MB

Download
memory/1380-78-0x0000000008DD0000-0x0000000008F00000-memory.dmp

Filesize
1.2MB

Download
memory/1380-76-0x0000000008DD0000-0x0000000008F00000-memory.dmp

Filesize
1.2MB

Download
memory/1904-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1904-67-0x0000000000280000-0x0000000000291000-memory.dmp

Filesize
68KB

Download
memory/1904-66-0x0000000000C20000-0x0000000000F23000-memory.dmp

Filesize
3.0MB

Download
memory/1904-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1904-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1904-63-0x000000000041F6F0-mapping.dmp

Download
memory/1904-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1936-54-0x00000000008C0000-0x0000000000956000-memory.dmp

Filesize
600KB

Download
memory/1936-58-0x0000000000850000-0x0000000000882000-memory.dmp

Filesize
200KB

Download
memory/1936-57-0x00000000051D0000-0x0000000005250000-memory.dmp

Filesize
512KB

Download
memory/1936-56-0x0000000000220000-0x000000000022A000-memory.dmp

Filesize
40KB

Download
memory/1936-55-0x00000000758D1000-0x00000000758D3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads