formbook | 42d8b7f214ab4c51c337d3abfaa9107f0e8fd78801311e205cd484e4b65fb440

General

Target

scrss.exe
Size

298KB
MD5

6cc7f4dc6d60f6b01b7164532f4d4fe6
SHA1

1dbf0fe6eb6c43494507f2cb286eac424ef87e79
SHA256

42d8b7f214ab4c51c337d3abfaa9107f0e8fd78801311e205cd484e4b65fb440
SHA512

1c4b1d5d3cb852eb1f985293a8ab085a416079ab6f71ad7b29866843cb27d6840678a7bdf84252f5952a4037341fd946a201704fd18ddf1aa857960dc7c234de

Score

10^/10

formbook fw02 rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

fw02

Decoy

payer-breakers.com

thesiscoper.com

rental-villa.com

scovikinnovations.com

hydh33.com

allmyshit.rest

lovejaclyn.com

vanessaruizwriting.com

dufonddelaclasse.com

kiddee168.com

monumentalmarketsllc.com

musclegainfatloss.com

avida.info

cosmo-wellness.net

dandelionfusedigital.com

oversizeloadbanners.com

konstelle.store

sdjnsbd.com

czoqg.xyz

5p6xljjse1lq.xyz

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

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1764-136-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2328-144-0x0000000000900000-0x000000000092F000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

Processes:

gdryhu.exegdryhu.exe

pid process

1732 gdryhu.exe
1764 gdryhu.exe

pid	process
1732	gdryhu.exe
1764	gdryhu.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

gdryhu.exegdryhu.exerundll32.exe

description	pid	process	target process
PID 1732 set thread context of 1764	1732	gdryhu.exe	gdryhu.exe
PID 1764 set thread context of 2604	1764	gdryhu.exe	Explorer.EXE
PID 2328 set thread context of 2604	2328	rundll32.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 60 IoCs

Processes:

gdryhu.exerundll32.exe

pid	process
1764	gdryhu.exe
1764	gdryhu.exe
1764	gdryhu.exe
1764	gdryhu.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe
2328	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2604 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

gdryhu.exerundll32.exe

pid process

1764 gdryhu.exe
1764 gdryhu.exe
1764 gdryhu.exe
2328 rundll32.exe
2328 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

gdryhu.exerundll32.exe

description pid process

Token: SeDebugPrivilege 1764 gdryhu.exe
Token: SeDebugPrivilege 2328 rundll32.exe

pid	process
2604	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1764	gdryhu.exe
Token: SeDebugPrivilege	2328	rundll32.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

scrss.exegdryhu.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 3840 wrote to memory of 1732	3840	scrss.exe	gdryhu.exe
PID 3840 wrote to memory of 1732	3840	scrss.exe	gdryhu.exe
PID 3840 wrote to memory of 1732	3840	scrss.exe	gdryhu.exe
PID 1732 wrote to memory of 1764	1732	gdryhu.exe	gdryhu.exe
PID 1732 wrote to memory of 1764	1732	gdryhu.exe	gdryhu.exe
PID 1732 wrote to memory of 1764	1732	gdryhu.exe	gdryhu.exe
PID 1732 wrote to memory of 1764	1732	gdryhu.exe	gdryhu.exe
PID 1732 wrote to memory of 1764	1732	gdryhu.exe	gdryhu.exe
PID 1732 wrote to memory of 1764	1732	gdryhu.exe	gdryhu.exe
PID 2604 wrote to memory of 2328	2604	Explorer.EXE	rundll32.exe
PID 2604 wrote to memory of 2328	2604	Explorer.EXE	rundll32.exe
PID 2604 wrote to memory of 2328	2604	Explorer.EXE	rundll32.exe
PID 2328 wrote to memory of 3536	2328	rundll32.exe	cmd.exe
PID 2328 wrote to memory of 3536	2328	rundll32.exe	cmd.exe
PID 2328 wrote to memory of 3536	2328	rundll32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2604

C:\Users\Admin\AppData\Local\Temp\scrss.exe
"C:\Users\Admin\AppData\Local\Temp\scrss.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:3840

C:\Users\Admin\AppData\Local\Temp\gdryhu.exe
C:\Users\Admin\AppData\Local\Temp\gdryhu.exe C:\Users\Admin\AppData\Local\Temp\ljjnophbc
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1732

C:\Users\Admin\AppData\Local\Temp\gdryhu.exe
C:\Users\Admin\AppData\Local\Temp\gdryhu.exe C:\Users\Admin\AppData\Local\Temp\ljjnophbc
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1764

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:2104

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\gdryhu.exe"
3⤵
PID:3536

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\28xr11m9yus78zir0q
Filesize
184KB

MD5
c18ecccb1a5c01198e114c7817cadb41

SHA1
1c929b507aea94361ee10545e74d6df83bef9e8e

SHA256
ce7f152e604fa9a630bc01f0fba3cdd7b3a327664a433b35217cdb758dc38c03

SHA512
5c43e23b398c905581b13e19f3c116eba5dd6dd4aca94f6b9f7311668eeb3a07b8afa2704669eb61ba2d74f7e0eccf3601666e8c4dca9defb343a9d38dfbc8fa

Download Submit
C:\Users\Admin\AppData\Local\Temp\gdryhu.exe
Filesize
133KB

MD5
6cb342d81df646b9202540b45a542c7f

SHA1
aa25dfbc0e0f02b9a03abb37ed1ad07823da921b

SHA256
28ff489eaea3e3ac6823a03a03a34b83d407167b9cd268b6f608c6ed491e69db

SHA512
f61322002fc4f5be304999866a8c35fb7d150bf1f8b24ad35c946f0cea41d433b39186f1b5f70334550fff17fd082c546d79ad43a6314a923f68a9990909f2da

Download Submit
C:\Users\Admin\AppData\Local\Temp\gdryhu.exe
Filesize
133KB

MD5
6cb342d81df646b9202540b45a542c7f

SHA1
aa25dfbc0e0f02b9a03abb37ed1ad07823da921b

SHA256
28ff489eaea3e3ac6823a03a03a34b83d407167b9cd268b6f608c6ed491e69db

SHA512
f61322002fc4f5be304999866a8c35fb7d150bf1f8b24ad35c946f0cea41d433b39186f1b5f70334550fff17fd082c546d79ad43a6314a923f68a9990909f2da

Download Submit
C:\Users\Admin\AppData\Local\Temp\gdryhu.exe
Filesize
133KB

MD5
6cb342d81df646b9202540b45a542c7f

SHA1
aa25dfbc0e0f02b9a03abb37ed1ad07823da921b

SHA256
28ff489eaea3e3ac6823a03a03a34b83d407167b9cd268b6f608c6ed491e69db

SHA512
f61322002fc4f5be304999866a8c35fb7d150bf1f8b24ad35c946f0cea41d433b39186f1b5f70334550fff17fd082c546d79ad43a6314a923f68a9990909f2da

Download Submit
C:\Users\Admin\AppData\Local\Temp\ljjnophbc
Filesize
5KB

MD5
ea1f80a2a3780a11d7d48c2214377b76

SHA1
a522820b83aa2b0fe231ae58fa7fc74376003bf8

SHA256
3dc7dd2b1e8db2568c08e6e6eaf0c8b237df9f5a5363cc70c5a1d255741e3c91

SHA512
d974929984e03cfd5b26303bed94ab9b4e61fa5bf1f1906d3e08a4cb085b35869b413b699695d0b9c19b77e67181ff29b486b785cda44b2f3043e1653c92d611

Download Submit
memory/1732-130-0x0000000000000000-mapping.dmp

Download
memory/1764-138-0x00000000014A0000-0x00000000017EA000-memory.dmp

Filesize
3.3MB

Download
memory/1764-136-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1764-135-0x0000000000000000-mapping.dmp

Download
memory/1764-140-0x0000000000F80000-0x0000000000F94000-memory.dmp

Filesize
80KB

Download
memory/2328-142-0x0000000000000000-mapping.dmp

Download
memory/2328-143-0x0000000000310000-0x0000000000324000-memory.dmp

Filesize
80KB

Download
memory/2328-144-0x0000000000900000-0x000000000092F000-memory.dmp

Filesize
188KB

Download
memory/2328-145-0x0000000002850000-0x0000000002B9A000-memory.dmp

Filesize
3.3MB

Download
memory/2328-147-0x00000000026A0000-0x0000000002733000-memory.dmp

Filesize
588KB

Download
memory/2604-141-0x0000000002890000-0x00000000029D2000-memory.dmp

Filesize
1.3MB

Download
memory/2604-148-0x0000000002C80000-0x0000000002DC1000-memory.dmp

Filesize
1.3MB

Download
memory/3536-146-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads