formbook | 43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d

General

Target

43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exe
Size

639KB
MD5

a8a83c5be8fac24c516269133b54356b
SHA1

93f4b8f93bf8e1e4fa25e28c9f26e5043f915486
SHA256

43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d
SHA512

9615c3bfc64449a62a2492c935d5750c44f4d136013ba7cef407989d42c65749a7258b1f78d132c928e1e1a0b2863d0d34e9ba598be799e8f3ce82607cbb55ca

Score

10^/10

formbook h35 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

3.8

Campaign

h35

Decoy

maraudersinc.com

liebianwangluo.com

visit-australia.info

machiyane-kasukabe.com

hafizclub.com

merkburn.net

favoritetraffic2updating.win

adrian-oeser.net

nkshopdomaincpplt234.info

imperiodofutebol.com

welometocaloundra.com

thehealthypose.com

squalloptna.com

bobknowsbest.com

damgproperties.com

wastemastershire.co.uk

swacballet.com

japanbreakingnews.com

bjufaa.info

aryakuza.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4248-135-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral2/memory/4248-141-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral2/memory/3092-145-0x0000000001270000-0x000000000129A000-memory.dmp	formbook
behavioral2/memory/3092-148-0x0000000001270000-0x000000000129A000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exeRegAsm.exechkdsk.exe

description	pid	process	target process
PID 3112 set thread context of 4248	3112	43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exe	RegAsm.exe
PID 4248 set thread context of 2804	4248	RegAsm.exe	Explorer.EXE
PID 3092 set thread context of 2804	3092	chkdsk.exe	Explorer.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

RegAsm.exechkdsk.exe

pid	process
4248	RegAsm.exe
4248	RegAsm.exe
4248	RegAsm.exe
4248	RegAsm.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe
3092	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2804 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegAsm.exechkdsk.exe

pid process

4248 RegAsm.exe
4248 RegAsm.exe
4248 RegAsm.exe
3092 chkdsk.exe
3092 chkdsk.exe

pid	process
2804	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exeRegAsm.exechkdsk.exe

description	pid	process
Token: SeDebugPrivilege	3112	43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exe
Token: SeDebugPrivilege	4248	RegAsm.exe
Token: SeDebugPrivilege	3092	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 3112 wrote to memory of 4248	3112	43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exe	RegAsm.exe
PID 3112 wrote to memory of 4248	3112	43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exe	RegAsm.exe
PID 3112 wrote to memory of 4248	3112	43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exe	RegAsm.exe
PID 3112 wrote to memory of 4248	3112	43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exe	RegAsm.exe
PID 3112 wrote to memory of 4248	3112	43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exe	RegAsm.exe
PID 3112 wrote to memory of 4248	3112	43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exe	RegAsm.exe
PID 2804 wrote to memory of 3092	2804	Explorer.EXE	chkdsk.exe
PID 2804 wrote to memory of 3092	2804	Explorer.EXE	chkdsk.exe
PID 2804 wrote to memory of 3092	2804	Explorer.EXE	chkdsk.exe
PID 3092 wrote to memory of 1544	3092	chkdsk.exe	cmd.exe
PID 3092 wrote to memory of 1544	3092	chkdsk.exe	cmd.exe
PID 3092 wrote to memory of 1544	3092	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2804

C:\Users\Admin\AppData\Local\Temp\43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exe
"C:\Users\Admin\AppData\Local\Temp\43e5b4d8f0e6ce3e201c1e829556ebd9f1a67806296180ed29dcdbf387afd19d.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3112

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4248

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3092

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
PID:1544

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1544-142-0x0000000000000000-mapping.dmp

Download
memory/2804-139-0x0000000007D40000-0x0000000007E58000-memory.dmp

Filesize
1.1MB

Download
memory/2804-149-0x0000000002BA0000-0x0000000002C70000-memory.dmp

Filesize
832KB

Download
memory/2804-147-0x0000000002BA0000-0x0000000002C70000-memory.dmp

Filesize
832KB

Download
memory/3092-143-0x0000000000560000-0x000000000056A000-memory.dmp

Filesize
40KB

Download
memory/3092-144-0x0000000001950000-0x0000000001C9A000-memory.dmp

Filesize
3.3MB

Download
memory/3092-148-0x0000000001270000-0x000000000129A000-memory.dmp

Filesize
168KB

Download
memory/3092-146-0x00000000017C0000-0x0000000001853000-memory.dmp

Filesize
588KB

Download
memory/3092-145-0x0000000001270000-0x000000000129A000-memory.dmp

Filesize
168KB

Download
memory/3092-140-0x0000000000000000-mapping.dmp

Download
memory/3112-133-0x0000000005CB0000-0x0000000005D4C000-memory.dmp

Filesize
624KB

Download
memory/3112-130-0x00000000002C0000-0x0000000000366000-memory.dmp

Filesize
664KB

Download
memory/3112-132-0x0000000004D50000-0x0000000004DE2000-memory.dmp

Filesize
584KB

Download
memory/3112-131-0x0000000005260000-0x0000000005804000-memory.dmp

Filesize
5.6MB

Download
memory/4248-135-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4248-141-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4248-134-0x0000000000000000-mapping.dmp

Download
memory/4248-138-0x0000000002920000-0x0000000002934000-memory.dmp

Filesize
80KB

Download
memory/4248-136-0x0000000002970000-0x0000000002CBA000-memory.dmp

Filesize
3.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads