formbook | e4d2c7462fe52eac23f88b482194083439cf69d48be74b3514ea804be68fff7e

General

Target

Payment transfer.exe
Size

317KB
MD5

96106d8d331a6f9c135c1f81bb82d9fe
SHA1

7e59ba122d299460504be159a862faeaf2f80491
SHA256

293f8c9b635a869a00e4f0d275c8a3e8f358242e4813e443282cbc5ceb8f099d
SHA512

87309e2ed58c1d5b257a73abb1332c0faf36c98972840487b2388d7dd96ed1805d06bcafd831f36c980b1fd1283ff54636f885eaa9e4797fb7d19387144af4d3

Score

10^/10

formbook rmj evasion persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

rmj

Decoy

arksarto.com

immigrationlawyersanjose.com

o60q2.com

my-mind-impulse.com

tenkai.info

southgeorgiaroofs.com

seo.ltd

joinpznow.today

acow.ltd

psychologue-paysdegex.com

ameenuzpg.com

iddua.com

jsfvat.info

fatalsdetale.online

91javac.com

racheldinwiddie.com

kedipvps.com

kinmeginme.com

greatarmor.com

golden.solar

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/4284-132-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral2/memory/3816-139-0x00000000003D0000-0x00000000003FA000-memory.dmp	formbook

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wlanext.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	wlanext.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\UPO8CNTPJ = "C:\\Program Files (x86)\\Dbbu4\\ldlhkzixtto.exe"	wlanext.exe

Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Payment transfer.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Payment transfer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Payment transfer.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

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Payment transfer.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Payment transfer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Payment transfer.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Payment transfer.exePayment transfer.exewlanext.exe

description	pid	process	target process
PID 1888 set thread context of 4284	1888	Payment transfer.exe	Payment transfer.exe
PID 4284 set thread context of 3140	4284	Payment transfer.exe	Explorer.EXE
PID 3816 set thread context of 3140	3816	wlanext.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

wlanext.exe

description ioc process

File opened for modification C:\Program Files (x86)\Dbbu4\ldlhkzixtto.exe wlanext.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Dbbu4\ldlhkzixtto.exe	wlanext.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-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wlanext.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

Processes:

Payment transfer.exewlanext.exe

pid	process
4284	Payment transfer.exe
4284	Payment transfer.exe
4284	Payment transfer.exe
4284	Payment transfer.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe
3816	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3140 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Payment transfer.exewlanext.exe

pid process

4284 Payment transfer.exe
4284 Payment transfer.exe
4284 Payment transfer.exe
3816 wlanext.exe
3816 wlanext.exe

pid	process
3140	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

Payment transfer.exePayment transfer.exewlanext.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1888	Payment transfer.exe
Token: SeDebugPrivilege	4284	Payment transfer.exe
Token: SeDebugPrivilege	3816	wlanext.exe
Token: SeShutdownPrivilege	3140	Explorer.EXE
Token: SeCreatePagefilePrivilege	3140	Explorer.EXE
Token: SeShutdownPrivilege	3140	Explorer.EXE
Token: SeCreatePagefilePrivilege	3140	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Payment transfer.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 1888 wrote to memory of 4284	1888	Payment transfer.exe	Payment transfer.exe
PID 1888 wrote to memory of 4284	1888	Payment transfer.exe	Payment transfer.exe
PID 1888 wrote to memory of 4284	1888	Payment transfer.exe	Payment transfer.exe
PID 1888 wrote to memory of 4284	1888	Payment transfer.exe	Payment transfer.exe
PID 1888 wrote to memory of 4284	1888	Payment transfer.exe	Payment transfer.exe
PID 1888 wrote to memory of 4284	1888	Payment transfer.exe	Payment transfer.exe
PID 3140 wrote to memory of 3816	3140	Explorer.EXE	wlanext.exe
PID 3140 wrote to memory of 3816	3140	Explorer.EXE	wlanext.exe
PID 3140 wrote to memory of 3816	3140	Explorer.EXE	wlanext.exe
PID 3816 wrote to memory of 4444	3816	wlanext.exe	cmd.exe
PID 3816 wrote to memory of 4444	3816	wlanext.exe	cmd.exe
PID 3816 wrote to memory of 4444	3816	wlanext.exe	cmd.exe
PID 3816 wrote to memory of 4104	3816	wlanext.exe	cmd.exe
PID 3816 wrote to memory of 4104	3816	wlanext.exe	cmd.exe
PID 3816 wrote to memory of 4104	3816	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3140

C:\Users\Admin\AppData\Local\Temp\Payment transfer.exe
"C:\Users\Admin\AppData\Local\Temp\Payment transfer.exe"
2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1888

C:\Users\Admin\AppData\Local\Temp\Payment transfer.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4284

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.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
PID:3816

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Payment transfer.exe"
3⤵
PID:4444

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:4104

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

1

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

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\890309VS\890logim.jpeg

Filesize
76KB

MD5
b737faad6af5dd980d7f4a25f9d25af9

SHA1
1dd4140d83489b40ee0b5cfc2deffb7909556e1e

SHA256
de27183494a1eaadcdccc59f4f094e3a9341b9b73103ab0644d300c334ddcaac

SHA512
fc8c550e5b7c31e6f85066ae68bc83ad99a3b714cd9777cd8e6b0ddec94f9d8a2eca018c9a851afe986116f4fcba81ca4f25e4ee9b13e26a8afec03c4a126656

Download Submit
C:\Users\Admin\AppData\Roaming\890309VS\890logrg.ini

Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\890309VS\890logri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\890309VS\890logrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/1888-130-0x0000000074A70000-0x0000000075021000-memory.dmp

Filesize
5.7MB

Download
memory/3140-136-0x0000000008040000-0x00000000081DB000-memory.dmp

Filesize
1.6MB

Download
memory/3140-143-0x00000000082D0000-0x0000000008434000-memory.dmp

Filesize
1.4MB

Download
memory/3816-139-0x00000000003D0000-0x00000000003FA000-memory.dmp

Filesize
168KB

Download
memory/3816-140-0x0000000000BF0000-0x0000000000F3A000-memory.dmp

Filesize
3.3MB

Download
memory/3816-142-0x0000000000B00000-0x0000000000B93000-memory.dmp

Filesize
588KB

Download
memory/3816-138-0x0000000000FE0000-0x0000000000FF7000-memory.dmp

Filesize
92KB

Download
memory/3816-137-0x0000000000000000-mapping.dmp

Download
memory/4104-145-0x0000000000000000-mapping.dmp

Download
memory/4284-135-0x0000000001400000-0x0000000001414000-memory.dmp

Filesize
80KB

Download
memory/4284-134-0x0000000001490000-0x00000000017DA000-memory.dmp

Filesize
3.3MB

Download
memory/4284-132-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4284-131-0x0000000000000000-mapping.dmp

Download
memory/4444-141-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads