formbook | 761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0

General

Target

r8ykXfy52F9CXd5d.exe
Size

759KB
MD5

6341110aa0627431093ef3c502f65669
SHA1

12dd6b363e9d841bce3fd0c007b1e84796909149
SHA256

761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0
SHA512

2aee95c0f40f86f6c505cabeb2797aab5e587b3021c40156c2f5bff0ebc5d6787c5975a1978a4747a303e7cdba637498bac923a7e633931dd79b62feffaa8224
SSDEEP

12288:IQ11UoIG5MPUNDguQL6/Vt+uIMtBLn6TnfymJVDgP5BhMW+:lUobySgu26t/IMt16OmJidMW+

Score

10^/10

formbook he2a discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

he2a

Decoy

070001606.xyz

jesuseascriancas.online

as-eltransport.xyz

bankditalia-company.online

linkedin-stijngraat.online

sportsbetd.xyz

spanish-classes-76893.bond

infonation.pro

nxwzbze.forum

rush-pay.biz

fulfillmissions.lat

infolungcancer.xyz

aqario.xyz

omepro.solar

jackmanmueshl.shop

amcart.store

ishanaudichya.xyz

sun4rk.shop

depression-test-74287.bond

chipit.shop

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/2756-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2756-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2648-23-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2520	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3028 set thread context of 2756	3028	r8ykXfy52F9CXd5d.exe	30
PID 2756 set thread context of 1232	2756	r8ykXfy52F9CXd5d.exe	21
PID 2648 set thread context of 1232	2648	chkdsk.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	r8ykXfy52F9CXd5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2756	r8ykXfy52F9CXd5d.exe
2756	r8ykXfy52F9CXd5d.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe
2648	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2756	r8ykXfy52F9CXd5d.exe
2756	r8ykXfy52F9CXd5d.exe
2756	r8ykXfy52F9CXd5d.exe
2648	chkdsk.exe
2648	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	r8ykXfy52F9CXd5d.exe
Token: SeDebugPrivilege	2648	chkdsk.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 2756	3028	r8ykXfy52F9CXd5d.exe	30
PID 3028 wrote to memory of 2756	3028	r8ykXfy52F9CXd5d.exe	30
PID 3028 wrote to memory of 2756	3028	r8ykXfy52F9CXd5d.exe	30
PID 3028 wrote to memory of 2756	3028	r8ykXfy52F9CXd5d.exe	30
PID 3028 wrote to memory of 2756	3028	r8ykXfy52F9CXd5d.exe	30
PID 3028 wrote to memory of 2756	3028	r8ykXfy52F9CXd5d.exe	30
PID 3028 wrote to memory of 2756	3028	r8ykXfy52F9CXd5d.exe	30
PID 1232 wrote to memory of 2648	1232	Explorer.EXE	31
PID 1232 wrote to memory of 2648	1232	Explorer.EXE	31
PID 1232 wrote to memory of 2648	1232	Explorer.EXE	31
PID 1232 wrote to memory of 2648	1232	Explorer.EXE	31
PID 2648 wrote to memory of 2520	2648	chkdsk.exe	32
PID 2648 wrote to memory of 2520	2648	chkdsk.exe	32
PID 2648 wrote to memory of 2520	2648	chkdsk.exe	32
PID 2648 wrote to memory of 2520	2648	chkdsk.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Users\Admin\AppData\Local\Temp\r8ykXfy52F9CXd5d.exe
  "C:\Users\Admin\AppData\Local\Temp\r8ykXfy52F9CXd5d.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3028
- - C:\Users\Admin\AppData\Local\Temp\r8ykXfy52F9CXd5d.exe
    "C:\Users\Admin\AppData\Local\Temp\r8ykXfy52F9CXd5d.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2756
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2648
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\r8ykXfy52F9CXd5d.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

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/1232-19-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1232-26-0x0000000003C90000-0x0000000003E90000-memory.dmp

Filesize
2.0MB

Download
memory/1232-24-0x00000000062B0000-0x0000000006424000-memory.dmp

Filesize
1.5MB

Download
memory/1232-20-0x00000000062B0000-0x0000000006424000-memory.dmp

Filesize
1.5MB

Download
memory/2648-23-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2648-22-0x0000000000CD0000-0x0000000000CD7000-memory.dmp

Filesize
28KB

Download
memory/2648-21-0x0000000000CD0000-0x0000000000CD7000-memory.dmp

Filesize
28KB

Download
memory/2756-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2756-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2756-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2756-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2756-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2756-15-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/2756-18-0x00000000003D0000-0x00000000003E4000-memory.dmp

Filesize
80KB

Download
memory/3028-14-0x0000000074200000-0x00000000748EE000-memory.dmp

Filesize
6.9MB

Download
memory/3028-0-0x000000007420E000-0x000000007420F000-memory.dmp

Filesize
4KB

Download
memory/3028-6-0x00000000051C0000-0x0000000005236000-memory.dmp

Filesize
472KB

Download
memory/3028-5-0x0000000074200000-0x00000000748EE000-memory.dmp

Filesize
6.9MB

Download
memory/3028-4-0x000000007420E000-0x000000007420F000-memory.dmp

Filesize
4KB

Download
memory/3028-3-0x00000000006E0000-0x00000000006F8000-memory.dmp

Filesize
96KB

Download
memory/3028-2-0x0000000074200000-0x00000000748EE000-memory.dmp

Filesize
6.9MB

Download
memory/3028-1-0x0000000001370000-0x0000000001434000-memory.dmp

Filesize
784KB

Download

Analysis

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