formbook | c0fdf37354c28e674255d1a26ed5190c6664639f424d485c5652098f458835c5

General

Target

PI.exe
Size

70KB
MD5

72e88de1efc3b17b6b59a635bad25294
SHA1

929b2471c0186e2e676c44d7687d3ac1f23c555c
SHA256

c0fdf37354c28e674255d1a26ed5190c6664639f424d485c5652098f458835c5
SHA512

95ec26ffa6a1de34aa9dc91ed431bccaa6c238bd316e79696e14e1ec4976f1a1564435f0d33e540cb15a023bc60230f223595c26e081033300c43ddc6edd3480
SSDEEP

1536:i03oxUXqNKAuDUaQl+kzdC9GiZQWSwi/fUpS/fX/MNK:i/QAuis1Jy///f/M0

Score

10^/10

formbook xloader zzun loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

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==

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/756-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/756-66-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/756-68-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1700-75-0x0000000000070000-0x000000000009C000-memory.dmp	xloader
behavioral1/memory/1700-79-0x0000000000070000-0x000000000009C000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

wscript.exe

flow pid process

28 1700 wscript.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:

PI.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Control Panel\International\Geo\Nation PI.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1408 cmd.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

flow	pid	process
28	1700	wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Control Panel\International\Geo\Nation	PI.exe

pid	process
1408	cmd.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

PI.exewscript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Iocoj = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ndsosim\\Iocoj.exe\""	PI.exe
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MPD0V4SH5X = "C:\\Program Files (x86)\\Pxrdlw8l\\winrdf0qf.exe"	wscript.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PI.exePI.exewscript.exe

description	pid	process	target process
PID 1196 set thread context of 756	1196	PI.exe	PI.exe
PID 756 set thread context of 1388	756	PI.exe	Explorer.EXE
PID 1700 set thread context of 1388	1700	wscript.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

wscript.exe

description ioc process

File opened for modification C:\Program Files (x86)\Pxrdlw8l\winrdf0qf.exe wscript.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Program Files (x86)\Pxrdlw8l\winrdf0qf.exe	wscript.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wscript.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

powershell.exePI.exewscript.exe

pid	process
936	powershell.exe
756	PI.exe
756	PI.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

PI.exewscript.exe

pid process

756 PI.exe
756 PI.exe
756 PI.exe
1700 wscript.exe
1700 wscript.exe
1700 wscript.exe
1700 wscript.exe

pid	process
756	PI.exe
756	PI.exe
756	PI.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe
1700	wscript.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

PI.exepowershell.exePI.exewscript.exe

description	pid	process
Token: SeDebugPrivilege	1196	PI.exe
Token: SeDebugPrivilege	936	powershell.exe
Token: SeDebugPrivilege	756	PI.exe
Token: SeDebugPrivilege	1700	wscript.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

PI.exeExplorer.EXEwscript.exe

description	pid	process	target process
PID 1196 wrote to memory of 936	1196	PI.exe	powershell.exe
PID 1196 wrote to memory of 936	1196	PI.exe	powershell.exe
PID 1196 wrote to memory of 936	1196	PI.exe	powershell.exe
PID 1196 wrote to memory of 936	1196	PI.exe	powershell.exe
PID 1196 wrote to memory of 756	1196	PI.exe	PI.exe
PID 1196 wrote to memory of 756	1196	PI.exe	PI.exe
PID 1196 wrote to memory of 756	1196	PI.exe	PI.exe
PID 1196 wrote to memory of 756	1196	PI.exe	PI.exe
PID 1196 wrote to memory of 756	1196	PI.exe	PI.exe
PID 1196 wrote to memory of 756	1196	PI.exe	PI.exe
PID 1196 wrote to memory of 756	1196	PI.exe	PI.exe
PID 1388 wrote to memory of 1700	1388	Explorer.EXE	wscript.exe
PID 1388 wrote to memory of 1700	1388	Explorer.EXE	wscript.exe
PID 1388 wrote to memory of 1700	1388	Explorer.EXE	wscript.exe
PID 1388 wrote to memory of 1700	1388	Explorer.EXE	wscript.exe
PID 1700 wrote to memory of 1408	1700	wscript.exe	cmd.exe
PID 1700 wrote to memory of 1408	1700	wscript.exe	cmd.exe
PID 1700 wrote to memory of 1408	1700	wscript.exe	cmd.exe
PID 1700 wrote to memory of 1408	1700	wscript.exe	cmd.exe
PID 1700 wrote to memory of 788	1700	wscript.exe	Firefox.exe
PID 1700 wrote to memory of 788	1700	wscript.exe	Firefox.exe
PID 1700 wrote to memory of 788	1700	wscript.exe	Firefox.exe
PID 1700 wrote to memory of 788	1700	wscript.exe	Firefox.exe
PID 1700 wrote to memory of 788	1700	wscript.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1388

C:\Users\Admin\AppData\Local\Temp\PI.exe
"C:\Users\Admin\AppData\Local\Temp\PI.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1196

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQA1AA==
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:936

C:\Users\Admin\AppData\Local\Temp\PI.exe
C:\Users\Admin\AppData\Local\Temp\PI.exe
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:756

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1560

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:324

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:2020

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1132

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:304

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:704

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:284

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1940

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1932

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1908

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1724

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\SysWOW64\wscript.exe"
2⤵
- Blocklisted process makes network request
- 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:1700

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PI.exe"
3⤵
- Deletes itself
PID:1408

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:788

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

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

memory/756-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/756-70-0x0000000000290000-0x00000000002A1000-memory.dmp

Filesize
68KB

Download
memory/756-69-0x0000000000A20000-0x0000000000D23000-memory.dmp

Filesize
3.0MB

Download
memory/756-68-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/756-66-0x000000000041F6F0-mapping.dmp

Download
memory/756-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/756-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/936-61-0x000000006F8E0000-0x000000006FE8B000-memory.dmp

Filesize
5.7MB

Download
memory/936-60-0x000000006F8E0000-0x000000006FE8B000-memory.dmp

Filesize
5.7MB

Download
memory/936-58-0x0000000000000000-mapping.dmp

Download
memory/1196-57-0x00000000056B0000-0x0000000005742000-memory.dmp

Filesize
584KB

Download
memory/1196-56-0x0000000005360000-0x000000000541C000-memory.dmp

Filesize
752KB

Download
memory/1196-55-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/1196-54-0x0000000000A00000-0x0000000000A16000-memory.dmp

Filesize
88KB

Download
memory/1388-78-0x0000000006EC0000-0x0000000006FBE000-memory.dmp

Filesize
1016KB

Download
memory/1388-71-0x0000000004D30000-0x0000000004E0D000-memory.dmp

Filesize
884KB

Download
memory/1388-80-0x0000000006EC0000-0x0000000006FBE000-memory.dmp

Filesize
1016KB

Download
memory/1408-73-0x0000000000000000-mapping.dmp

Download
memory/1700-75-0x0000000000070000-0x000000000009C000-memory.dmp

Filesize
176KB

Download
memory/1700-76-0x0000000002280000-0x0000000002583000-memory.dmp

Filesize
3.0MB

Download
memory/1700-77-0x0000000000930000-0x00000000009C0000-memory.dmp

Filesize
576KB

Download
memory/1700-74-0x0000000000E50000-0x0000000000E76000-memory.dmp

Filesize
152KB

Download
memory/1700-79-0x0000000000070000-0x000000000009C000-memory.dmp

Filesize
176KB

Download
memory/1700-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads