formbook | 3a26dd85c2956529f42c1622a093f7b817cbd4af7a474d75198df9e455ac753f

General

Target

file.exe
Size

459KB
MD5

7a51e6b13d6568f50f2bbf7650b09403
SHA1

1f3f31636c54f1f021afc372fe7f97d74baaf942
SHA256

3a26dd85c2956529f42c1622a093f7b817cbd4af7a474d75198df9e455ac753f
SHA512

c0d4fbff3c1e31fa688a558340d850dcb637def55882dfe93620c8c92972757d10ffb1c9e99aa8c08a757d92989e898b4710550fbac7d8a14d777daf02c5c2db
SSDEEP

12288:i/4TZ+87mkPFUy0fxws0fkrzza48I5pFhjGdiLyo7Qz+Y2wjVMJ2p:iby05ws0izza486lj8Ol7TY2wBMJ+

Score

10^/10

formbook f4ca rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

f4ca

Decoy

omFHB5ajfJi1UEIEV9XcoRw=

UBjJkmQPyprdhcFF/bdCWQ==

evGKkBUj1je+otcfpw==

KgvGVeOATSt3nug0BIOm2JvOQycB

Lv6o3K0r9aSjI0lr9fg1txw=

LH1jJb/HieQpsEdqWCQTvX2PmsDVIeg=

99dte0XauJfk6Xv+uQxJFgA1gMktBA==

21FkkGB9gMniDQw2ffu6

r4lKBM/q6TZwVZfS

F+14qHeVWi56KdQ=

BgWXRsVoICMvvQ==

I+EozFl0Uy56KdQ=

xoXCgEllKEbWfjFCCLo=

qo9G1lXvvGt5GkxrLQWw

ORNlYic0PJ2ip4geEFSv

Yj+GFpvFxy0uVYx1fLI/XQ==

XL+veIKPjOTe4fjvFs+n

D2JKVAfuakXCAyoEvw==

voWJU81tH56wvt/vImbCcgVd

dVEcwFrmb8bZ4vXvFs+n

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Blocklisted process makes network request 1 IoCs

Processes:

wscript.exe

flow pid process

8 1940 wscript.exe
Loads dropped DLL 1 IoCs

Processes:

wscript.exe

pid process

1940 wscript.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
8	1940	wscript.exe

pid	process
1940	wscript.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

file.exeCasPol.exewscript.exe

description	pid	process	target process
PID 564 set thread context of 1820	564	file.exe	CasPol.exe
PID 1820 set thread context of 1236	1820	CasPol.exe	Explorer.EXE
PID 1940 set thread context of 1236	1940	wscript.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

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wscript.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

CasPol.exewscript.exe

pid	process
1820	CasPol.exe
1820	CasPol.exe
1820	CasPol.exe
1820	CasPol.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe
1940	wscript.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

CasPol.exewscript.exe

pid process

1820 CasPol.exe
1820 CasPol.exe
1820 CasPol.exe
1940 wscript.exe
1940 wscript.exe
1940 wscript.exe
1940 wscript.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

file.exeCasPol.exewscript.exe

description pid process

Token: SeDebugPrivilege 564 file.exe
Token: SeDebugPrivilege 1820 CasPol.exe
Token: SeDebugPrivilege 1940 wscript.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1236 Explorer.EXE
1236 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1236 Explorer.EXE
1236 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	564	file.exe
Token: SeDebugPrivilege	1820	CasPol.exe
Token: SeDebugPrivilege	1940	wscript.exe

pid	process
1236	Explorer.EXE
1236	Explorer.EXE

pid	process
1236	Explorer.EXE
1236	Explorer.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

file.exeExplorer.EXEwscript.exe

description	pid	process	target process
PID 564 wrote to memory of 1820	564	file.exe	CasPol.exe
PID 564 wrote to memory of 1820	564	file.exe	CasPol.exe
PID 564 wrote to memory of 1820	564	file.exe	CasPol.exe
PID 564 wrote to memory of 1820	564	file.exe	CasPol.exe
PID 564 wrote to memory of 1820	564	file.exe	CasPol.exe
PID 564 wrote to memory of 1820	564	file.exe	CasPol.exe
PID 564 wrote to memory of 1820	564	file.exe	CasPol.exe
PID 1236 wrote to memory of 1940	1236	Explorer.EXE	wscript.exe
PID 1236 wrote to memory of 1940	1236	Explorer.EXE	wscript.exe
PID 1236 wrote to memory of 1940	1236	Explorer.EXE	wscript.exe
PID 1236 wrote to memory of 1940	1236	Explorer.EXE	wscript.exe
PID 1940 wrote to memory of 1480	1940	wscript.exe	Firefox.exe
PID 1940 wrote to memory of 1480	1940	wscript.exe	Firefox.exe
PID 1940 wrote to memory of 1480	1940	wscript.exe	Firefox.exe
PID 1940 wrote to memory of 1480	1940	wscript.exe	Firefox.exe
PID 1940 wrote to memory of 1480	1940	wscript.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:1236

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:564

C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1820

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\SysWOW64\wscript.exe"
2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1940

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1480

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

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

\Users\Admin\AppData\Local\Temp\sqlite3.dll
Filesize
890KB

MD5
8402a6aa76d7787ff03943dd129e3d83

SHA1
895338cb761d62930ca93918011fd2cd33d5b30c

SHA256
49ff99d5b24f4f7d5a8ea175f35a6548c74b04e5c621c60121b5088dab19b4eb

SHA512
39bbe90385be35492825929296aae771fb4afb00a1f6a48f0e4ec17bc1097c3a32cea3b22033116c82695e66acbd6c847483a8da21e7302240467b58e39169ea

Download Submit
memory/564-55-0x0000000000C40000-0x0000000000CB6000-memory.dmp

Filesize
472KB

Download
memory/564-56-0x00000000008A0000-0x0000000000914000-memory.dmp

Filesize
464KB

Download
memory/564-57-0x00000000024A0000-0x0000000002512000-memory.dmp

Filesize
456KB

Download
memory/564-54-0x0000000000D10000-0x0000000000D88000-memory.dmp

Filesize
480KB

Download
memory/1236-66-0x00000000074C0000-0x0000000007649000-memory.dmp

Filesize
1.5MB

Download
memory/1236-77-0x0000000004980000-0x0000000004A36000-memory.dmp

Filesize
728KB

Download
memory/1236-74-0x0000000004980000-0x0000000004A36000-memory.dmp

Filesize
728KB

Download
memory/1820-59-0x00000000004012B0-mapping.dmp

Download
memory/1820-62-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/1820-64-0x0000000000840000-0x0000000000B43000-memory.dmp

Filesize
3.0MB

Download
memory/1820-58-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1820-68-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1820-69-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/1820-61-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1820-65-0x00000000000B0000-0x00000000000C0000-memory.dmp

Filesize
64KB

Download
memory/1940-72-0x0000000000070000-0x000000000009D000-memory.dmp

Filesize
180KB

Download
memory/1940-73-0x0000000001ED0000-0x0000000001F5F000-memory.dmp

Filesize
572KB

Download
memory/1940-71-0x00000000020A0000-0x00000000023A3000-memory.dmp

Filesize
3.0MB

Download
memory/1940-75-0x0000000000070000-0x000000000009D000-memory.dmp

Filesize
180KB

Download
memory/1940-76-0x0000000074AD1000-0x0000000074AD3000-memory.dmp

Filesize
8KB

Download
memory/1940-70-0x00000000009A0000-0x00000000009C6000-memory.dmp

Filesize
152KB

Download
memory/1940-67-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads