formbook | c02f34dcea29e7a3b6901cd3e745fbae79e2ab45db6ba28569a5d3994aedde8c

General

Target

Invo458_Signed_.exe
Size

1.1MB
MD5

386a65d6fb3e5a13d690c20474e6c342
SHA1

3084a0d410b1b1ee0bc5a5308a8f65124b574e56
SHA256

4a5f33710715ce37a266d1848db4599be8ede6fe3f1070aa49b3bcca352f3f46
SHA512

e571e72487787b174c862a26ce03a3736b9f56361e091684f991821924eee2a3941664164f2714ba078cc78e178d69491610d076147f940415ca6027b8f6cea9

Score

10^/10

formbook n8x persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

n8x

Decoy

xn--bwwn53bbqc.net

theschooloftheinvisual.net

highseqanalysis.info

fengkuanghanyu.com

myexecutivejourney.com

rfwtje.info

amilcarspencerdemelo.com

cryptodreaming.info

astoundingvogueboutique.com

ytjulin.com

croxventure.com

panstarv.com

fatimahinayet.com

mattyboysparrow.com

dtfftfut.com

y0uhdporno.com

91av5.com

coralchau.com

f98fhr567a.info

aengion.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
behavioral2/memory/3256-130-0x0000000005250000-0x0000000005390000-memory.dmp	formbook
behavioral2/memory/3264-136-0x0000000000A70000-0x0000000000A9D000-memory.dmp	formbook

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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Invo458_Signed_.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Xwxl = "C:\\Users\\Admin\\AppData\\Local\\Xwxl.url"	Invo458_Signed_.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Invo458_Signed_.exewlanext.exe

description	pid	process	target process
PID 3256 set thread context of 3060	3256	Invo458_Signed_.exe	Explorer.EXE
PID 3264 set thread context of 3060	3264	wlanext.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wlanext.exe

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

Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.

Processes:

description flow ioc

HTTP User-Agent header 29 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

description	flow	ioc
HTTP User-Agent header	29	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 42 IoCs

Processes:

Invo458_Signed_.exewlanext.exe

pid	process
3256	Invo458_Signed_.exe
3256	Invo458_Signed_.exe
3256	Invo458_Signed_.exe
3256	Invo458_Signed_.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe
3264	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3060 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Invo458_Signed_.exewlanext.exe

pid process

3256 Invo458_Signed_.exe
3256 Invo458_Signed_.exe
3256 Invo458_Signed_.exe
3264 wlanext.exe
3264 wlanext.exe
3264 wlanext.exe
3264 wlanext.exe

pid	process
3060	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

Invo458_Signed_.exewlanext.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3256	Invo458_Signed_.exe
Token: SeDebugPrivilege	3264	wlanext.exe
Token: SeShutdownPrivilege	3060	Explorer.EXE
Token: SeCreatePagefilePrivilege	3060	Explorer.EXE
Token: SeShutdownPrivilege	3060	Explorer.EXE
Token: SeCreatePagefilePrivilege	3060	Explorer.EXE
Token: SeShutdownPrivilege	3060	Explorer.EXE
Token: SeCreatePagefilePrivilege	3060	Explorer.EXE
Token: SeShutdownPrivilege	3060	Explorer.EXE
Token: SeCreatePagefilePrivilege	3060	Explorer.EXE

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Explorer.EXEwlanext.exe

description	pid	process	target process
PID 3060 wrote to memory of 3264	3060	Explorer.EXE	wlanext.exe
PID 3060 wrote to memory of 3264	3060	Explorer.EXE	wlanext.exe
PID 3060 wrote to memory of 3264	3060	Explorer.EXE	wlanext.exe
PID 3264 wrote to memory of 2580	3264	wlanext.exe	cmd.exe
PID 3264 wrote to memory of 2580	3264	wlanext.exe	cmd.exe
PID 3264 wrote to memory of 2580	3264	wlanext.exe	cmd.exe
PID 3264 wrote to memory of 232	3264	wlanext.exe	Firefox.exe
PID 3264 wrote to memory of 232	3264	wlanext.exe	Firefox.exe
PID 3264 wrote to memory of 232	3264	wlanext.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3060

C:\Users\Admin\AppData\Local\Temp\Invo458_Signed_.exe
"C:\Users\Admin\AppData\Local\Temp\Invo458_Signed_.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3256

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.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:3264

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:232

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

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

Download Submit
C:\Users\Admin\AppData\Roaming\83M6P6QB\83Mlogim.jpeg
Filesize
75KB

MD5
59ee31f967e36a274c4960966bc7c60e

SHA1
a00748bb21ce0e3d397157386a397d1766da6807

SHA256
100a0c9842695548eafeedce2ce9537d3d558962fc5f66bbca6ad5349a6cda49

SHA512
0caf99dd273905154e8291e96d63f0eec1114a2b954bf0cc15ccdb73835221335b804c806ad658372f4b4f8c1a3a745305acbb58f22e507858854ea417fb919c

Download Submit
C:\Users\Admin\AppData\Roaming\83M6P6QB\83Mlogrf.ini
Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\83M6P6QB\83Mlogrg.ini
Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\83M6P6QB\83Mlogri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\83M6P6QB\83Mlogrv.ini
Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/2580-138-0x0000000000000000-mapping.dmp

Download
memory/3060-141-0x0000000008070000-0x0000000008153000-memory.dmp

Filesize
908KB

Download
memory/3060-133-0x0000000002E50000-0x0000000002F3E000-memory.dmp

Filesize
952KB

Download
memory/3256-130-0x0000000005250000-0x0000000005390000-memory.dmp

Filesize
1.2MB

Download
memory/3256-132-0x00000000054F0000-0x0000000005504000-memory.dmp

Filesize
80KB

Download
memory/3256-131-0x00000000056F0000-0x0000000005A3A000-memory.dmp

Filesize
3.3MB

Download
memory/3264-137-0x0000000001330000-0x000000000167A000-memory.dmp

Filesize
3.3MB

Download
memory/3264-136-0x0000000000A70000-0x0000000000A9D000-memory.dmp

Filesize
180KB

Download
memory/3264-140-0x0000000001720000-0x00000000017B3000-memory.dmp

Filesize
588KB

Download
memory/3264-135-0x0000000000A50000-0x0000000000A67000-memory.dmp

Filesize
92KB

Download
memory/3264-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads