formbook | 4ce42b0b74090b13a3a1692caeabfd4df748e8fa0220ba1342765fe56b399348

General

Target

f1d94fcc611053cd5162e70dc36fddfa.exe
Size

684KB
MD5

f1d94fcc611053cd5162e70dc36fddfa
SHA1

52ecf628c9fe25f2eedca8da56aa0785958e2638
SHA256

4ce42b0b74090b13a3a1692caeabfd4df748e8fa0220ba1342765fe56b399348
SHA512

f422f6332bb00eabec395ce4154c940632feafba67a2206cbfa5700114dee0bc38b394febe09aecdf4cae6f9bdfd232491c1f8a179813c52c763ce3b7bbd87f7

Score

10^/10

formbook hs3h evasion rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

hs3h

C2

http://www.alefisrael.com/hs3h/

Decoy

slairt.com

teresasellsflorida.com

resouthcarolina.com

npccfbf.com

hutshed.com

westatesmarking.com

rustmonkeys.com

kagawa-rentacar.com

easyvoip-system.com

admorinsulation.com

ericaleighjensen.com

zhonghaojiaju.net

apple-iphone.xyz

b0t.info

torgetmc.xyz

lawrencemargarse.com

6123655.com

macdonalds-delivery.com

cvpfl.com

ayudaparaturent.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
behavioral1/memory/1508-64-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1508-65-0x000000000041F1A0-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:

f1d94fcc611053cd5162e70dc36fddfa.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f1d94fcc611053cd5162e70dc36fddfa.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f1d94fcc611053cd5162e70dc36fddfa.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:

f1d94fcc611053cd5162e70dc36fddfa.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	f1d94fcc611053cd5162e70dc36fddfa.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	f1d94fcc611053cd5162e70dc36fddfa.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

f1d94fcc611053cd5162e70dc36fddfa.exe

description pid process target process

PID 1112 set thread context of 1508 1112 f1d94fcc611053cd5162e70dc36fddfa.exe f1d94fcc611053cd5162e70dc36fddfa.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

1172 schtasks.exe

description	pid	process	target process
PID 1112 set thread context of 1508	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe

pid	process
1172	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

f1d94fcc611053cd5162e70dc36fddfa.exef1d94fcc611053cd5162e70dc36fddfa.exe

pid	process
1112	f1d94fcc611053cd5162e70dc36fddfa.exe
1112	f1d94fcc611053cd5162e70dc36fddfa.exe
1112	f1d94fcc611053cd5162e70dc36fddfa.exe
1508	f1d94fcc611053cd5162e70dc36fddfa.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

f1d94fcc611053cd5162e70dc36fddfa.exe

description pid process

Token: SeDebugPrivilege 1112 f1d94fcc611053cd5162e70dc36fddfa.exe

description	pid	process
Token: SeDebugPrivilege	1112	f1d94fcc611053cd5162e70dc36fddfa.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

f1d94fcc611053cd5162e70dc36fddfa.exe

C:\Users\Admin\AppData\Local\Temp\f1d94fcc611053cd5162e70dc36fddfa.exe
"C:\Users\Admin\AppData\Local\Temp\f1d94fcc611053cd5162e70dc36fddfa.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:1112

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HhpQDpq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFD91.tmp"
2⤵
- Creates scheduled task(s)
PID:1172

C:\Users\Admin\AppData\Local\Temp\f1d94fcc611053cd5162e70dc36fddfa.exe
"{path}"
2⤵
PID:1944

C:\Users\Admin\AppData\Local\Temp\f1d94fcc611053cd5162e70dc36fddfa.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
PID:1508

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpFD91.tmp
MD5
0a9ccbf88f66c270566535c1b5a9f5e0

SHA1
1da40e8b864bd9de26d35aa449446a9f0e8f86ad

SHA256
66574fe8f321f5316f613242499c335f316a51ba43e6df7b07dd36adf38075c3

SHA512
8bbcbed48ca144c37b2268e07830286e16d4e8cb7d7d864fe768abe73a47f69bb8f93d6c48fa61fa4465d2df9b09c86fca2b36e41e49c78a3303940b64653179

Download Submit
memory/1112-55-0x00000000751A1000-0x00000000751A3000-memory.dmp

Filesize
8KB

Download
memory/1112-56-0x0000000004BD0000-0x0000000004BD1000-memory.dmp

Filesize
4KB

Download
memory/1112-57-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1112-58-0x0000000004F90000-0x0000000005014000-memory.dmp

Filesize
528KB

Download
memory/1112-59-0x0000000000780000-0x00000000007B1000-memory.dmp

Filesize
196KB

Download
memory/1112-53-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/1172-60-0x0000000000000000-mapping.dmp

Download
memory/1508-62-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1508-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1508-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1508-65-0x000000000041F1A0-mapping.dmp

Download
memory/1508-66-0x00000000008F0000-0x0000000000BF3000-memory.dmp

Filesize
3.0MB

Download

description	pid	process	target process
PID 1112 wrote to memory of 1172	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	schtasks.exe
PID 1112 wrote to memory of 1172	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	schtasks.exe
PID 1112 wrote to memory of 1172	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	schtasks.exe
PID 1112 wrote to memory of 1172	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	schtasks.exe
PID 1112 wrote to memory of 1944	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe
PID 1112 wrote to memory of 1944	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe
PID 1112 wrote to memory of 1944	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe
PID 1112 wrote to memory of 1944	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe
PID 1112 wrote to memory of 1508	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe
PID 1112 wrote to memory of 1508	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe
PID 1112 wrote to memory of 1508	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe
PID 1112 wrote to memory of 1508	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe
PID 1112 wrote to memory of 1508	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe
PID 1112 wrote to memory of 1508	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe
PID 1112 wrote to memory of 1508	1112	f1d94fcc611053cd5162e70dc36fddfa.exe	f1d94fcc611053cd5162e70dc36fddfa.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads