formbook | c46ee625d9626c6583f1129a66c6044d50ae10ba95fec689e13646a0278afbe0

General

Target

me.scr
Size

502KB
MD5

6b693ec92fa73a62acad9332bbf4b00e
SHA1

b80dc9288fd45bb5db01c98a100e57bbc0da1570
SHA256

d7740644db0391caebce4ec75e92a95062eb29b65cf118815907ae1a291421a1
SHA512

09b3ce7c75f1ce37133d7f9e6d4a487f28ec3b7ebfa67e66db300414d08bc366c74b3c87fc8267fa85a8237489ddfa781fe4d4fe48ebacf80ff8e2225d4d6d53

Score

10^/10

formbook hha persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

hha

Decoy

atarairdive.com

binanca.com

krepostta-sofia.com

chiangmaipartys.com

bestglobalseo.com

rdsri.com

immaginaeventi.com

lushrox.com

kenderia.com

goldenbrownacademy.com

kiddyquest.com

cs-support.online

magicovino.com

banderasacuadros.com

originalducatispareparts.com

tfpfleet.com

wickedmaple.com

fasypeoplesearch.com

zggwpmwdcp.com

boav11.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
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
behavioral6/memory/228-137-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral6/memory/2924-144-0x0000000000F60000-0x0000000000F8D000-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\QLH8V4OXC0 = "C:\\Program Files (x86)\\Tovfduf\\mnul2rnffpqt.exe"	cmstp.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
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 3 IoCs

Processes:

me.scrvbc.execmstp.exe

description	pid	process	target process
PID 2208 set thread context of 228	2208	me.scr	vbc.exe
PID 228 set thread context of 2528	228	vbc.exe	Explorer.EXE
PID 2924 set thread context of 2528	2924	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)\Tovfduf\mnul2rnffpqt.exe cmstp.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Tovfduf\mnul2rnffpqt.exe	cmstp.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-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 38 IoCs

Processes:

vbc.execmstp.exe

pid	process
228	vbc.exe
228	vbc.exe
228	vbc.exe
228	vbc.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe
2924	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2528 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

vbc.execmstp.exe

pid process

228 vbc.exe
228 vbc.exe
228 vbc.exe
2924 cmstp.exe
2924 cmstp.exe
2924 cmstp.exe
2924 cmstp.exe

pid	process
2528	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

vbc.execmstp.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	228	vbc.exe
Token: SeDebugPrivilege	2924	cmstp.exe
Token: SeShutdownPrivilege	2528	Explorer.EXE
Token: SeCreatePagefilePrivilege	2528	Explorer.EXE
Token: SeShutdownPrivilege	2528	Explorer.EXE
Token: SeCreatePagefilePrivilege	2528	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

me.scrExplorer.EXEcmstp.exe

description	pid	process	target process
PID 2208 wrote to memory of 228	2208	me.scr	vbc.exe
PID 2208 wrote to memory of 228	2208	me.scr	vbc.exe
PID 2208 wrote to memory of 228	2208	me.scr	vbc.exe
PID 2208 wrote to memory of 228	2208	me.scr	vbc.exe
PID 2208 wrote to memory of 228	2208	me.scr	vbc.exe
PID 2208 wrote to memory of 228	2208	me.scr	vbc.exe
PID 2528 wrote to memory of 2924	2528	Explorer.EXE	cmstp.exe
PID 2528 wrote to memory of 2924	2528	Explorer.EXE	cmstp.exe
PID 2528 wrote to memory of 2924	2528	Explorer.EXE	cmstp.exe
PID 2924 wrote to memory of 2084	2924	cmstp.exe	cmd.exe
PID 2924 wrote to memory of 2084	2924	cmstp.exe	cmd.exe
PID 2924 wrote to memory of 2084	2924	cmstp.exe	cmd.exe
PID 2924 wrote to memory of 1564	2924	cmstp.exe	cmd.exe
PID 2924 wrote to memory of 1564	2924	cmstp.exe	cmd.exe
PID 2924 wrote to memory of 1564	2924	cmstp.exe	cmd.exe
PID 2924 wrote to memory of 3776	2924	cmstp.exe	Firefox.exe
PID 2924 wrote to memory of 3776	2924	cmstp.exe	Firefox.exe
PID 2924 wrote to memory of 3776	2924	cmstp.exe	Firefox.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:2528

C:\Users\Admin\AppData\Local\Temp\me.scr
"C:\Users\Admin\AppData\Local\Temp\me.scr" /S
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2208

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:228

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:2924

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
3⤵
PID:2084

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:1564

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3776

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

Scripting

Credential Access

Credentials in Files

1

T1081

Discovery

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\Roaming\O0555R23\O05logim.jpeg

Filesize
82KB

MD5
65ff5a7918fa3b5bd55069900ee7ea34

SHA1
931f34574b78eb405333a720444471068c0ff292

SHA256
45dd4efe4f2ec1902efbb1b8229d648a7c5f0e0d63deba2a1ada185823cff96b

SHA512
3c20f44f1e6eff72a5bf544b1195e9e4f645792105143a9607096bd87f639339d6e39ca3fea0995b4894e6cad6b996945daf07e6fc3b6be8f31202f7e4bf8e1f

Download Submit
C:\Users\Admin\AppData\Roaming\O0555R23\O05logrf.ini

Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\O0555R23\O05logrg.ini

Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\O0555R23\O05logri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\O0555R23\O05logrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/228-136-0x0000000000000000-mapping.dmp

Download
memory/228-137-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/228-139-0x00000000012A0000-0x00000000015EA000-memory.dmp

Filesize
3.3MB

Download
memory/228-140-0x0000000000DD0000-0x0000000000DE4000-memory.dmp

Filesize
80KB

Download
memory/1564-149-0x0000000000000000-mapping.dmp

Download
memory/2084-146-0x0000000000000000-mapping.dmp

Download
memory/2208-130-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2208-131-0x0000000005050000-0x00000000050EC000-memory.dmp

Filesize
624KB

Download
memory/2208-132-0x00000000057C0000-0x0000000005D64000-memory.dmp

Filesize
5.6MB

Download
memory/2208-133-0x00000000050F0000-0x0000000005182000-memory.dmp

Filesize
584KB

Download
memory/2208-134-0x0000000002B70000-0x0000000002B7A000-memory.dmp

Filesize
40KB

Download
memory/2208-135-0x0000000005190000-0x00000000051E6000-memory.dmp

Filesize
344KB

Download
memory/2528-148-0x0000000007660000-0x00000000077F1000-memory.dmp

Filesize
1.6MB

Download
memory/2528-141-0x0000000002590000-0x0000000002693000-memory.dmp

Filesize
1.0MB

Download
memory/2924-142-0x0000000000000000-mapping.dmp

Download
memory/2924-147-0x00000000034E0000-0x0000000003573000-memory.dmp

Filesize
588KB

Download
memory/2924-145-0x00000000030F0000-0x000000000343A000-memory.dmp

Filesize
3.3MB

Download
memory/2924-144-0x0000000000F60000-0x0000000000F8D000-memory.dmp

Filesize
180KB

Download
memory/2924-143-0x00000000009F0000-0x0000000000A06000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads