formbook | c223fceadad4fc1006603457f45f17e0f475d62e32b45ce0d6a35ac034e77360

General

Target

RFQ-MNAMR-001RB-WhastsAAp Images.exe
Size

398KB
MD5

239efcf744fc1e906b704d4eebe4a962
SHA1

c8c0fe13941c237cd72c2eb3adcfc13f9513d32d
SHA256

aae9b362789cdf8a185d9b963cb3b0ba5d7f5599285cecd8625944168232c42c
SHA512

affe8bdcfbdc3e2554f2b8c887a9d417a69b5e031f7433ecf8971cc14a55bbabb70fbacd495a23d355662a679fbca321c38eb46e37949ea51e2e290ad7558af9

Score

10^/10

formbook xcm persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

xcm

Decoy

xn--rhq5es99j.com

storage-download-fast.review

campingfamilly.com

rientbottcieux.info

2015z.com

999izo.info

guojiafangshui.com

jpaecwra.com

evergreenmga.net

semprebellissima.store

meizin01.com

bangladesherkhobor.net

rivercoveresidencessg.com

carbonfibercrew.com

1rbld2.biz

nikolatesla.review

erlandsonsbrygga.com

cursosreikiadistancia.com

centraldemotorersltda.com

shelskysbrooklynbagels.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4348-135-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral2/memory/4348-137-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral2/memory/4340-143-0x0000000000D70000-0x0000000000D9A000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmstp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ZRZHZLRHUVI = "C:\\Program Files (x86)\\Corsdqn\\ofd4hr.exe"	cmstp.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:

RFQ-MNAMR-001RB-WhastsAAp Images.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	RFQ-MNAMR-001RB-WhastsAAp Images.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

Suspicious use of SetThreadContext 3 IoCs

Processes:

RFQ-MNAMR-001RB-WhastsAAp Images.exeRFQ-MNAMR-001RB-WhastsAAp Images.execmstp.exe

description	pid	process	target process
PID 4876 set thread context of 4348	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	RFQ-MNAMR-001RB-WhastsAAp Images.exe
PID 4348 set thread context of 8	4348	RFQ-MNAMR-001RB-WhastsAAp Images.exe	Explorer.EXE
PID 4340 set thread context of 8	4340	cmstp.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cmstp.exe

description ioc process

File opened for modification C:\Program Files (x86)\Corsdqn\ofd4hr.exe cmstp.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

4496 schtasks.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Corsdqn\ofd4hr.exe	cmstp.exe

pid	process
4496	schtasks.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 56 IoCs

Processes:

RFQ-MNAMR-001RB-WhastsAAp Images.exeRFQ-MNAMR-001RB-WhastsAAp Images.execmstp.exe

pid	process
4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe
4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe
4348	RFQ-MNAMR-001RB-WhastsAAp Images.exe
4348	RFQ-MNAMR-001RB-WhastsAAp Images.exe
4348	RFQ-MNAMR-001RB-WhastsAAp Images.exe
4348	RFQ-MNAMR-001RB-WhastsAAp Images.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe
4340	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

8 Explorer.EXE

pid	process
8	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RFQ-MNAMR-001RB-WhastsAAp Images.execmstp.exe

pid	process
4348	RFQ-MNAMR-001RB-WhastsAAp Images.exe
4348	RFQ-MNAMR-001RB-WhastsAAp Images.exe
4348	RFQ-MNAMR-001RB-WhastsAAp Images.exe
4340	cmstp.exe
4340	cmstp.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

RFQ-MNAMR-001RB-WhastsAAp Images.exeRFQ-MNAMR-001RB-WhastsAAp Images.execmstp.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe
Token: SeDebugPrivilege	4348	RFQ-MNAMR-001RB-WhastsAAp Images.exe
Token: SeDebugPrivilege	4340	cmstp.exe
Token: SeShutdownPrivilege	8	Explorer.EXE
Token: SeCreatePagefilePrivilege	8	Explorer.EXE
Token: SeShutdownPrivilege	8	Explorer.EXE
Token: SeCreatePagefilePrivilege	8	Explorer.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

RFQ-MNAMR-001RB-WhastsAAp Images.exe

pid process

4876 RFQ-MNAMR-001RB-WhastsAAp Images.exe
4876 RFQ-MNAMR-001RB-WhastsAAp Images.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

RFQ-MNAMR-001RB-WhastsAAp Images.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 4876 wrote to memory of 4496	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	schtasks.exe
PID 4876 wrote to memory of 4496	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	schtasks.exe
PID 4876 wrote to memory of 4496	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	schtasks.exe
PID 4876 wrote to memory of 4460	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	RFQ-MNAMR-001RB-WhastsAAp Images.exe
PID 4876 wrote to memory of 4460	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	RFQ-MNAMR-001RB-WhastsAAp Images.exe
PID 4876 wrote to memory of 4460	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	RFQ-MNAMR-001RB-WhastsAAp Images.exe
PID 4876 wrote to memory of 4348	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	RFQ-MNAMR-001RB-WhastsAAp Images.exe
PID 4876 wrote to memory of 4348	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	RFQ-MNAMR-001RB-WhastsAAp Images.exe
PID 4876 wrote to memory of 4348	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	RFQ-MNAMR-001RB-WhastsAAp Images.exe
PID 4876 wrote to memory of 4348	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	RFQ-MNAMR-001RB-WhastsAAp Images.exe
PID 4876 wrote to memory of 4348	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	RFQ-MNAMR-001RB-WhastsAAp Images.exe
PID 4876 wrote to memory of 4348	4876	RFQ-MNAMR-001RB-WhastsAAp Images.exe	RFQ-MNAMR-001RB-WhastsAAp Images.exe
PID 8 wrote to memory of 4340	8	Explorer.EXE	cmstp.exe
PID 8 wrote to memory of 4340	8	Explorer.EXE	cmstp.exe
PID 8 wrote to memory of 4340	8	Explorer.EXE	cmstp.exe
PID 4340 wrote to memory of 232	4340	cmstp.exe	cmd.exe
PID 4340 wrote to memory of 232	4340	cmstp.exe	cmd.exe
PID 4340 wrote to memory of 232	4340	cmstp.exe	cmd.exe
PID 4340 wrote to memory of 1112	4340	cmstp.exe	cmd.exe
PID 4340 wrote to memory of 1112	4340	cmstp.exe	cmd.exe
PID 4340 wrote to memory of 1112	4340	cmstp.exe	cmd.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

cmstp.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer cmstp.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cmstp.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:8

C:\Users\Admin\AppData\Local\Temp\RFQ-MNAMR-001RB-WhastsAAp Images.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ-MNAMR-001RB-WhastsAAp Images.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4876

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fgySYm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD621.tmp"
3⤵
- Creates scheduled task(s)
PID:4496

C:\Users\Admin\AppData\Local\Temp\RFQ-MNAMR-001RB-WhastsAAp Images.exe
"{path}"
3⤵
PID:4460

C:\Users\Admin\AppData\Local\Temp\RFQ-MNAMR-001RB-WhastsAAp Images.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4348

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Adds policy 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
- System policy modification
PID:4340

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\RFQ-MNAMR-001RB-WhastsAAp Images.exe"
3⤵
PID:232

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:1112

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

3

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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD621.tmp
Filesize
1KB

MD5
d2427523e564975841726be36764a0df

SHA1
abee13bbbd100f875ceacf5f393b70cfb6fbf49f

SHA256
80d020ab58fc4de7cbc065ecd9693fdcfa9f8b6a2ba4312c839bda4e3d9d273b

SHA512
dfecc971e3b732a2dc8885fb69bbc7468b196ef85ba277bb57d801447f1d30f47131bd89cd1a2df6d01ff1ef773a3b3fddb8d5062f3755ab919f54153bbb83be

Download Submit
memory/8-147-0x0000000008360000-0x00000000084A0000-memory.dmp

Filesize
1.2MB

Download
memory/8-140-0x0000000007D90000-0x0000000007EDF000-memory.dmp

Filesize
1.3MB

Download
memory/232-145-0x0000000000000000-mapping.dmp

Download
memory/1112-148-0x0000000000000000-mapping.dmp

Download
memory/4340-142-0x0000000000720000-0x0000000000736000-memory.dmp

Filesize
88KB

Download
memory/4340-146-0x0000000002D10000-0x0000000002DA3000-memory.dmp

Filesize
588KB

Download
memory/4340-144-0x0000000002E80000-0x00000000031CA000-memory.dmp

Filesize
3.3MB

Download
memory/4340-143-0x0000000000D70000-0x0000000000D9A000-memory.dmp

Filesize
168KB

Download
memory/4340-141-0x0000000000000000-mapping.dmp

Download
memory/4348-134-0x0000000000000000-mapping.dmp

Download
memory/4348-139-0x00000000012B0000-0x00000000012C4000-memory.dmp

Filesize
80KB

Download
memory/4348-138-0x0000000001780000-0x0000000001ACA000-memory.dmp

Filesize
3.3MB

Download
memory/4348-137-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4348-135-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4460-133-0x0000000000000000-mapping.dmp

Download
memory/4496-131-0x0000000000000000-mapping.dmp

Download
memory/4876-130-0x0000000075150000-0x0000000075701000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads