formbook | c47ecbb9f13f48daa79ff7bc582625f238b8760f6a4fc542c0dcb6d2ffbec11f

General

Target

HScx.exe
Size

681KB
MD5

7aa9a6424157856428679fa6665b3276
SHA1

88f3a5b5cfc326bcb1fc9544af50e869c101c3c8
SHA256

c47ecbb9f13f48daa79ff7bc582625f238b8760f6a4fc542c0dcb6d2ffbec11f
SHA512

3446f3a8a2d1e06d0cac3f58f576d9329c906ac6befe561f1b46711b5e98e0b793ebbbd269b995b21026a72666496d45eec779c54109649418997c25a49adaee
SSDEEP

12288:vGZKzvnOBKYvI82Ok316ZjS5dN6cGc9oNkMS5cpSj3E4JfvafDpnqFU3:LOOXwpGT9uvA3Lhvar4FU3

Score

10^/10

formbook f19g discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

f19g

Decoy

ppson.top

lacialshoals.sbs

871122.vip

ghase.fun

si.app

attsnew.net

iyafashion.shop

hfuj3u8a6me3.shop

3vw67fqfwnj.shop

lumbiz.xyz

fsh6j.shop

razydev.top

aronmart.shop

oreclosed-homes-82435.bond

ometria24.online

assinonet.online

j17b.xyz

-web-p501.buzz

olar-panels-1469027.zone

oecommerce.lol

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2780-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2780-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2748-24-0x0000000000190000-0x00000000001BF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2560	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1348 set thread context of 2780	1348	HScx.exe	31
PID 2780 set thread context of 1252	2780	HScx.exe	21
PID 2748 set thread context of 1252	2748	wscript.exe	21

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HScx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
1348	HScx.exe
1348	HScx.exe
2780	HScx.exe
2780	HScx.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe
2748	wscript.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2780	HScx.exe
2780	HScx.exe
2780	HScx.exe
2748	wscript.exe
2748	wscript.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1348	HScx.exe
Token: SeDebugPrivilege	2780	HScx.exe
Token: SeDebugPrivilege	2748	wscript.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1348 wrote to memory of 3008	1348	HScx.exe	30
PID 1348 wrote to memory of 3008	1348	HScx.exe	30
PID 1348 wrote to memory of 3008	1348	HScx.exe	30
PID 1348 wrote to memory of 3008	1348	HScx.exe	30
PID 1348 wrote to memory of 2780	1348	HScx.exe	31
PID 1348 wrote to memory of 2780	1348	HScx.exe	31
PID 1348 wrote to memory of 2780	1348	HScx.exe	31
PID 1348 wrote to memory of 2780	1348	HScx.exe	31
PID 1348 wrote to memory of 2780	1348	HScx.exe	31
PID 1348 wrote to memory of 2780	1348	HScx.exe	31
PID 1348 wrote to memory of 2780	1348	HScx.exe	31
PID 1252 wrote to memory of 2748	1252	Explorer.EXE	32
PID 1252 wrote to memory of 2748	1252	Explorer.EXE	32
PID 1252 wrote to memory of 2748	1252	Explorer.EXE	32
PID 1252 wrote to memory of 2748	1252	Explorer.EXE	32
PID 2748 wrote to memory of 2560	2748	wscript.exe	33
PID 2748 wrote to memory of 2560	2748	wscript.exe	33
PID 2748 wrote to memory of 2560	2748	wscript.exe	33
PID 2748 wrote to memory of 2560	2748	wscript.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1252
- C:\Users\Admin\AppData\Local\Temp\HScx.exe
  "C:\Users\Admin\AppData\Local\Temp\HScx.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1348
- - C:\Users\Admin\AppData\Local\Temp\HScx.exe
    "C:\Users\Admin\AppData\Local\Temp\HScx.exe"
    3⤵
    PID:3008
- - C:\Users\Admin\AppData\Local\Temp\HScx.exe
    "C:\Users\Admin\AppData\Local\Temp\HScx.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2780
- C:\Windows\SysWOW64\wscript.exe
  "C:\Windows\SysWOW64\wscript.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2748
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\HScx.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1252-20-0x0000000006B90000-0x0000000006CFE000-memory.dmp

Filesize
1.4MB

Download
memory/1252-27-0x0000000004B70000-0x0000000004C70000-memory.dmp

Filesize
1024KB

Download
memory/1252-25-0x0000000006B90000-0x0000000006CFE000-memory.dmp

Filesize
1.4MB

Download
memory/1348-5-0x0000000074960000-0x000000007504E000-memory.dmp

Filesize
6.9MB

Download
memory/1348-3-0x0000000000C20000-0x0000000000C38000-memory.dmp

Filesize
96KB

Download
memory/1348-0-0x000000007496E000-0x000000007496F000-memory.dmp

Filesize
4KB

Download
memory/1348-6-0x0000000005BB0000-0x0000000005C26000-memory.dmp

Filesize
472KB

Download
memory/1348-1-0x0000000001090000-0x0000000001140000-memory.dmp

Filesize
704KB

Download
memory/1348-4-0x000000007496E000-0x000000007496F000-memory.dmp

Filesize
4KB

Download
memory/1348-2-0x0000000074960000-0x000000007504E000-memory.dmp

Filesize
6.9MB

Download
memory/1348-15-0x0000000074960000-0x000000007504E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-24-0x0000000000190000-0x00000000001BF000-memory.dmp

Filesize
188KB

Download
memory/2748-23-0x0000000000C90000-0x0000000000CB6000-memory.dmp

Filesize
152KB

Download
memory/2748-21-0x0000000000C90000-0x0000000000CB6000-memory.dmp

Filesize
152KB

Download
memory/2780-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2780-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2780-19-0x0000000000130000-0x0000000000145000-memory.dmp

Filesize
84KB

Download
memory/2780-16-0x0000000000A20000-0x0000000000D23000-memory.dmp

Filesize
3.0MB

Download
memory/2780-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2780-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2780-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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