formbook | 4c004822cd78deb55cf3ed841a087538288bb3ec95558ef0e2b5d644c98613b1

General

Target

Purchase Order.pdf.exe
Size

385KB
MD5

00d7241de149d6511579e6d5ad7974ec
SHA1

0257125b4e77f3dffeb21709a39668115015c0b8
SHA256

575cd2d06aa99a48ed59b412bb87aba3b3e3cd66093c7f9efd118bf533032ba3
SHA512

bfad300716c91bc0559d0f4cb16e361e39646b67d2651a50e67415ba7a28daf687310bdfb3dca6d2113c7c3fc6f5077921c4949a692fbcf62c703cd675921450

Score

10^/10

formbook 4vx persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

4vx

Decoy

kontinuer.com

outofthebluelove.com

docentrood.com

emowm.com

jsa862.net

kshoworld.com

kumsalkorel.com

adrigh.info

goldentrianglerv.com

youkuy.com

lindaclijsters.com

audreyfarley.com

alasitter.com

uscar-boerse.com

successwithfletch.com

474opebet.com

xjlfb.com

doingworkabroad.com

0pe864.com

ittestperfumeok.live

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
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4572-135-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/1964-143-0x0000000001220000-0x000000000124D000-memory.dmp	formbook

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:

Purchase Order.pdf.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Purchase Order.pdf.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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

help.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	help.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\TPOTYV_H1DN = "C:\\Program Files (x86)\\A_dqhtxtp\\ertx6tzzt4r6.exe"	help.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Purchase Order.pdf.exeMSBuild.exehelp.exe

description	pid	process	target process
PID 940 set thread context of 4572	940	Purchase Order.pdf.exe	MSBuild.exe
PID 4572 set thread context of 3212	4572	MSBuild.exe	Explorer.EXE
PID 1964 set thread context of 3212	1964	help.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

help.exe

description ioc process

File opened for modification C:\Program Files (x86)\A_dqhtxtp\ertx6tzzt4r6.exe help.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

3448 schtasks.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\A_dqhtxtp\ertx6tzzt4r6.exe	help.exe

pid	process
3448	schtasks.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

help.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	help.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

Processes:

MSBuild.exehelp.exe

pid	process
4572	MSBuild.exe
4572	MSBuild.exe
4572	MSBuild.exe
4572	MSBuild.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe
1964	help.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3212 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

MSBuild.exehelp.exe

pid process

4572 MSBuild.exe
4572 MSBuild.exe
4572 MSBuild.exe
1964 help.exe
1964 help.exe
1964 help.exe
1964 help.exe

pid	process
3212	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

MSBuild.exehelp.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4572	MSBuild.exe
Token: SeDebugPrivilege	1964	help.exe
Token: SeShutdownPrivilege	3212	Explorer.EXE
Token: SeCreatePagefilePrivilege	3212	Explorer.EXE
Token: SeShutdownPrivilege	3212	Explorer.EXE
Token: SeCreatePagefilePrivilege	3212	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Purchase Order.pdf.exeExplorer.EXEhelp.exe

description	pid	process	target process
PID 940 wrote to memory of 3448	940	Purchase Order.pdf.exe	schtasks.exe
PID 940 wrote to memory of 3448	940	Purchase Order.pdf.exe	schtasks.exe
PID 940 wrote to memory of 3448	940	Purchase Order.pdf.exe	schtasks.exe
PID 940 wrote to memory of 4572	940	Purchase Order.pdf.exe	MSBuild.exe
PID 940 wrote to memory of 4572	940	Purchase Order.pdf.exe	MSBuild.exe
PID 940 wrote to memory of 4572	940	Purchase Order.pdf.exe	MSBuild.exe
PID 940 wrote to memory of 4572	940	Purchase Order.pdf.exe	MSBuild.exe
PID 940 wrote to memory of 4572	940	Purchase Order.pdf.exe	MSBuild.exe
PID 940 wrote to memory of 4572	940	Purchase Order.pdf.exe	MSBuild.exe
PID 3212 wrote to memory of 1964	3212	Explorer.EXE	help.exe
PID 3212 wrote to memory of 1964	3212	Explorer.EXE	help.exe
PID 3212 wrote to memory of 1964	3212	Explorer.EXE	help.exe
PID 1964 wrote to memory of 2148	1964	help.exe	cmd.exe
PID 1964 wrote to memory of 2148	1964	help.exe	cmd.exe
PID 1964 wrote to memory of 2148	1964	help.exe	cmd.exe
PID 1964 wrote to memory of 2580	1964	help.exe	cmd.exe
PID 1964 wrote to memory of 2580	1964	help.exe	cmd.exe
PID 1964 wrote to memory of 2580	1964	help.exe	cmd.exe
PID 1964 wrote to memory of 1828	1964	help.exe	Firefox.exe
PID 1964 wrote to memory of 1828	1964	help.exe	Firefox.exe
PID 1964 wrote to memory of 1828	1964	help.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3212

C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:940

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cXccmqY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp370E.tmp"
3⤵
- Creates scheduled task(s)
PID:3448

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4572

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
2⤵
- 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:1964

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
3⤵
PID:2148

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:2580

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1828

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

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

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

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

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C:\Users\Admin\AppData\Local\Temp\tmp370E.tmp
Filesize
1KB

MD5
03fbcd139a4e75ba9e3e483d9b8aba3e

SHA1
6aa40399188899ac16606e6c4d93408b57399903

SHA256
d531eb409b0dbcc0facf8781f753301063a05216246edead15ca4f5a5718c4a7

SHA512
d1dead5254e4e6677c65d65d9263352dd6808a4dbe717adb32ccccfbe8707b2254cb8a461b77263dcf150dbdad0a86d7518756d4e81656e2a80f63674579619b

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C:\Users\Admin\AppData\Roaming\0M8426P6\0M8logim.jpeg
Filesize
78KB

MD5
10c7c22f5d6fb50cdcee619a62799af6

SHA1
968c5260bd6528c0e439535fd9c68196caa19cef

SHA256
7d2c8c89f6b91b4365d8a135872cdf1d0137a39d46f6706533169612c097e11b

SHA512
5d375ca720787f5942cbf94a385f88adb8d48f8a843875b426d19f6111d76e916c7dd292703b9ca72002d1f1436459a6c6efbad58c9f55d908ed80734a7205e2

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C:\Users\Admin\AppData\Roaming\0M8426P6\0M8logrf.ini
Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

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C:\Users\Admin\AppData\Roaming\0M8426P6\0M8logrg.ini
Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\0M8426P6\0M8logri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

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C:\Users\Admin\AppData\Roaming\0M8426P6\0M8logrv.ini
Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/940-131-0x00000000752D0000-0x0000000075881000-memory.dmp

Filesize
5.7MB

Download
memory/1964-140-0x0000000000000000-mapping.dmp

Download
memory/1964-142-0x0000000000200000-0x0000000000207000-memory.dmp

Filesize
28KB

Download
memory/1964-144-0x0000000001A50000-0x0000000001D9A000-memory.dmp

Filesize
3.3MB

Download
memory/1964-143-0x0000000001220000-0x000000000124D000-memory.dmp

Filesize
180KB

Download
memory/1964-145-0x0000000001780000-0x0000000001813000-memory.dmp

Filesize
588KB

Download
memory/2148-141-0x0000000000000000-mapping.dmp

Download
memory/2580-147-0x0000000000000000-mapping.dmp

Download
memory/3212-146-0x0000000008A90000-0x0000000008BD2000-memory.dmp

Filesize
1.3MB

Download
memory/3212-139-0x0000000008670000-0x0000000008801000-memory.dmp

Filesize
1.6MB

Download
memory/3448-132-0x0000000000000000-mapping.dmp

Download
memory/4572-138-0x0000000000C00000-0x0000000000C14000-memory.dmp

Filesize
80KB

Download
memory/4572-137-0x0000000001080000-0x00000000013CA000-memory.dmp

Filesize
3.3MB

Download
memory/4572-135-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4572-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads