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

Suspicious use of SetThreadContext 4 IoCs

Processes:

file.exeCasPol.execontrol.exe

description	pid	process	target process
PID 1904 set thread context of 3656	1904	file.exe	CasPol.exe
PID 3656 set thread context of 1936	3656	CasPol.exe	Explorer.EXE
PID 3656 set thread context of 1936	3656	CasPol.exe	Explorer.EXE
PID 2488 set thread context of 1936	2488	control.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

control.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	control.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

file.exeCasPol.execontrol.exe

pid	process
1904	file.exe
1904	file.exe
3656	CasPol.exe
3656	CasPol.exe
3656	CasPol.exe
3656	CasPol.exe
3656	CasPol.exe
3656	CasPol.exe
3656	CasPol.exe
3656	CasPol.exe
3656	CasPol.exe
3656	CasPol.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1936 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

CasPol.execontrol.exe

pid process

3656 CasPol.exe
3656 CasPol.exe
3656 CasPol.exe
3656 CasPol.exe
2488 control.exe
2488 control.exe
2488 control.exe
2488 control.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

file.exeCasPol.execontrol.exe

description pid process

Token: SeDebugPrivilege 1904 file.exe
Token: SeDebugPrivilege 3656 CasPol.exe
Token: SeDebugPrivilege 2488 control.exe

pid	process
1936	Explorer.EXE

pid	process
3656	CasPol.exe
3656	CasPol.exe
3656	CasPol.exe
3656	CasPol.exe
2488	control.exe
2488	control.exe
2488	control.exe
2488	control.exe

description	pid	process
Token: SeDebugPrivilege	1904	file.exe
Token: SeDebugPrivilege	3656	CasPol.exe
Token: SeDebugPrivilege	2488	control.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeExplorer.EXEcontrol.exe

description	pid	process	target process
PID 1904 wrote to memory of 2796	1904	file.exe	CasPol.exe
PID 1904 wrote to memory of 2796	1904	file.exe	CasPol.exe
PID 1904 wrote to memory of 2796	1904	file.exe	CasPol.exe
PID 1904 wrote to memory of 3656	1904	file.exe	CasPol.exe
PID 1904 wrote to memory of 3656	1904	file.exe	CasPol.exe
PID 1904 wrote to memory of 3656	1904	file.exe	CasPol.exe
PID 1904 wrote to memory of 3656	1904	file.exe	CasPol.exe
PID 1904 wrote to memory of 3656	1904	file.exe	CasPol.exe
PID 1904 wrote to memory of 3656	1904	file.exe	CasPol.exe
PID 1936 wrote to memory of 2488	1936	Explorer.EXE	control.exe
PID 1936 wrote to memory of 2488	1936	Explorer.EXE	control.exe
PID 1936 wrote to memory of 2488	1936	Explorer.EXE	control.exe
PID 2488 wrote to memory of 4260	2488	control.exe	Firefox.exe
PID 2488 wrote to memory of 4260	2488	control.exe	Firefox.exe
PID 2488 wrote to memory of 4260	2488	control.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1936

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1904

C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
3⤵
PID:2796

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:3656

C:\Windows\SysWOW64\control.exe
"C:\Windows\SysWOW64\control.exe"
2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2488

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4260

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1904-137-0x00007FFE7DFA0000-0x00007FFE7EA61000-memory.dmp

Filesize
10.8MB

Download
memory/1904-133-0x00007FFE7DFA0000-0x00007FFE7EA61000-memory.dmp

Filesize
10.8MB

Download
memory/1904-132-0x0000028573080000-0x00000285730F8000-memory.dmp

Filesize
480KB

Download
memory/1936-143-0x0000000002680000-0x00000000027A9000-memory.dmp

Filesize
1.2MB

Download
memory/1936-155-0x0000000007FD0000-0x0000000008098000-memory.dmp

Filesize
800KB

Download
memory/1936-157-0x0000000007FD0000-0x0000000008098000-memory.dmp

Filesize
800KB

Download
memory/1936-147-0x0000000007E30000-0x0000000007FCC000-memory.dmp

Filesize
1.6MB

Download
memory/2488-156-0x0000000001030000-0x000000000105D000-memory.dmp

Filesize
180KB

Download
memory/2488-154-0x0000000002D30000-0x0000000002DBF000-memory.dmp

Filesize
572KB

Download
memory/2488-153-0x0000000002FD0000-0x000000000331A000-memory.dmp

Filesize
3.3MB

Download
memory/2488-151-0x0000000000CC0000-0x0000000000CE7000-memory.dmp

Filesize
156KB

Download
memory/2488-152-0x0000000001030000-0x000000000105D000-memory.dmp

Filesize
180KB

Download
memory/2488-148-0x0000000000000000-mapping.dmp

Download
memory/3656-139-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/3656-146-0x0000000000C00000-0x0000000000C10000-memory.dmp

Filesize
64KB

Download
memory/3656-149-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3656-150-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/3656-145-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/3656-144-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3656-142-0x00000000005F0000-0x0000000000600000-memory.dmp

Filesize
64KB

Download
memory/3656-140-0x00000000010C0000-0x000000000140A000-memory.dmp

Filesize
3.3MB

Download
memory/3656-138-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3656-135-0x00000000004012B0-mapping.dmp

Download
memory/3656-134-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads