formbook | 04e7f27915298f09a1486331df3f0e5121e4a7856f41290f48200255b8b82df8

General

Target

4cb2041db0a8696f1853543f5c03b89a.exe
Size

850KB
MD5

4cb2041db0a8696f1853543f5c03b89a
SHA1

aaa3e737d72504340eeb6111d7d51c8a7e37efe2
SHA256

04e7f27915298f09a1486331df3f0e5121e4a7856f41290f48200255b8b82df8
SHA512

2d4a07afc9dbb6c1f81c5e6f16c51763f2fd42bba2e77c0310b17ee949aad3e88562e5d13f77c13449585ddd2918512e80b8735e9fbf7155826ee39d566d938a

Score

10^/10

formbook evasion rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.thesiromiel.com/kgw/

Decoy

valentinakasu.com

soyelmatador.com

collaborativeprosperity.com

power8brokers.com

nexus-ink.com

manpasandmeatmarket.com

the-ethical-forums.today

maryannpark.com

bikininbodymommy.com

pxwuo.com

bigbangmerch.com

okaysinger.com

shopcarpe.com

rainbowhillsswimclub.com

crifinmarket.com

ebl-play.net

forceandsonsequipment.com

viagraytqwi.com

latashashop.com

suffocatinglymundanepodcast.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2540-13-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/2540-14-0x000000000041EB70-mapping.dmp	formbook

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
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:

4cb2041db0a8696f1853543f5c03b89a.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4cb2041db0a8696f1853543f5c03b89a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4cb2041db0a8696f1853543f5c03b89a.exe

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:

4cb2041db0a8696f1853543f5c03b89a.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	4cb2041db0a8696f1853543f5c03b89a.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	4cb2041db0a8696f1853543f5c03b89a.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

4cb2041db0a8696f1853543f5c03b89a.exe

description pid process target process

PID 984 set thread context of 2540 984 4cb2041db0a8696f1853543f5c03b89a.exe 4cb2041db0a8696f1853543f5c03b89a.exe

description	pid	process	target process
PID 984 set thread context of 2540	984	4cb2041db0a8696f1853543f5c03b89a.exe	4cb2041db0a8696f1853543f5c03b89a.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

4cb2041db0a8696f1853543f5c03b89a.exe4cb2041db0a8696f1853543f5c03b89a.exe

pid	process
984	4cb2041db0a8696f1853543f5c03b89a.exe
984	4cb2041db0a8696f1853543f5c03b89a.exe
984	4cb2041db0a8696f1853543f5c03b89a.exe
2540	4cb2041db0a8696f1853543f5c03b89a.exe
2540	4cb2041db0a8696f1853543f5c03b89a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

4cb2041db0a8696f1853543f5c03b89a.exe

description pid process

Token: SeDebugPrivilege 984 4cb2041db0a8696f1853543f5c03b89a.exe

description	pid	process
Token: SeDebugPrivilege	984	4cb2041db0a8696f1853543f5c03b89a.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

4cb2041db0a8696f1853543f5c03b89a.exe

description	pid	process	target process
PID 984 wrote to memory of 4000	984	4cb2041db0a8696f1853543f5c03b89a.exe	4cb2041db0a8696f1853543f5c03b89a.exe
PID 984 wrote to memory of 4000	984	4cb2041db0a8696f1853543f5c03b89a.exe	4cb2041db0a8696f1853543f5c03b89a.exe
PID 984 wrote to memory of 4000	984	4cb2041db0a8696f1853543f5c03b89a.exe	4cb2041db0a8696f1853543f5c03b89a.exe
PID 984 wrote to memory of 2540	984	4cb2041db0a8696f1853543f5c03b89a.exe	4cb2041db0a8696f1853543f5c03b89a.exe
PID 984 wrote to memory of 2540	984	4cb2041db0a8696f1853543f5c03b89a.exe	4cb2041db0a8696f1853543f5c03b89a.exe
PID 984 wrote to memory of 2540	984	4cb2041db0a8696f1853543f5c03b89a.exe	4cb2041db0a8696f1853543f5c03b89a.exe
PID 984 wrote to memory of 2540	984	4cb2041db0a8696f1853543f5c03b89a.exe	4cb2041db0a8696f1853543f5c03b89a.exe
PID 984 wrote to memory of 2540	984	4cb2041db0a8696f1853543f5c03b89a.exe	4cb2041db0a8696f1853543f5c03b89a.exe
PID 984 wrote to memory of 2540	984	4cb2041db0a8696f1853543f5c03b89a.exe	4cb2041db0a8696f1853543f5c03b89a.exe

C:\Users\Admin\AppData\Local\Temp\4cb2041db0a8696f1853543f5c03b89a.exe
"C:\Users\Admin\AppData\Local\Temp\4cb2041db0a8696f1853543f5c03b89a.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:984

C:\Users\Admin\AppData\Local\Temp\4cb2041db0a8696f1853543f5c03b89a.exe
"C:\Users\Admin\AppData\Local\Temp\4cb2041db0a8696f1853543f5c03b89a.exe"
2⤵
PID:4000

C:\Users\Admin\AppData\Local\Temp\4cb2041db0a8696f1853543f5c03b89a.exe
"C:\Users\Admin\AppData\Local\Temp\4cb2041db0a8696f1853543f5c03b89a.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
PID:2540

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/984-2-0x0000000073840000-0x0000000073F2E000-memory.dmp

Filesize
6.9MB

Download
memory/984-3-0x0000000000F50000-0x0000000000F51000-memory.dmp

Filesize
4KB

Download
memory/984-5-0x00000000058A0000-0x00000000058A1000-memory.dmp

Filesize
4KB

Download
memory/984-6-0x0000000005E40000-0x0000000005E41000-memory.dmp

Filesize
4KB

Download
memory/984-7-0x0000000005940000-0x0000000005941000-memory.dmp

Filesize
4KB

Download
memory/984-8-0x0000000005850000-0x0000000005851000-memory.dmp

Filesize
4KB

Download
memory/984-9-0x0000000005B00000-0x0000000005B01000-memory.dmp

Filesize
4KB

Download
memory/984-10-0x0000000005860000-0x0000000005872000-memory.dmp

Filesize
72KB

Download
memory/984-11-0x00000000067D0000-0x000000000683E000-memory.dmp

Filesize
440KB

Download
memory/984-12-0x0000000006920000-0x0000000006921000-memory.dmp

Filesize
4KB

Download
memory/2540-13-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2540-14-0x000000000041EB70-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads