formbook | b26d7f1c78311fe2e149042bbfeb9b14781de9e7dfd3bcb1e78ec540fe316ad6

General

Target

PO#A91641-MSKU9953077.exe
Size

428KB
MD5

5ccd1492d563b11ffdfd66d51aa370b5
SHA1

3a7441cb83f5ca0732e8826f164c087b077a69a5
SHA256

e777d588f24e21fdcc3add6de5b93d5fb498b594a59f03d02b5a7880bc5d5180
SHA512

11625c6391526fd798ed1d22b8df9a5278241b4b2ec0e37d1d8493ef5a7f1fad4f4d850c67713a431d38739a43d5b7e88394dc039de49ae986e7b215be2f5444
SSDEEP

6144:cbhdbMroO/lGquzY2ZmmjrmQGnHpnP6aupTzqfU0IgDKTTVz6TRvdqs0QC+VkTfW:IbMrQHzY2ZDgR6aKiIgDQVyYAkTfg

Score

10^/10

formbook ergs discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ergs

Decoy

oceanprimesanfrancisco.com

dk-tnc.com

sodangwang.com

abrat-ed.com

dusubiqiqijem.xyz

getsup.online

homeneto.com

shose8.com

tronlane.com

nidowicosasod.xyz

independienteatleticclub.com

pca-winschool.com

realbadnastystories.site

bluevioletfloral.com

simplifiedpeacepodcast.com

abcfreediving.com

theyardbunny.com

holoique.com

ibkr1325.com

tjnfioou.xyz

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/4448-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4448-19-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4448-23-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1160-28-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3244 set thread context of 4448	3244	PO#A91641-MSKU9953077.exe	99
PID 4448 set thread context of 3516	4448	PO#A91641-MSKU9953077.exe	56
PID 4448 set thread context of 3516	4448	PO#A91641-MSKU9953077.exe	56
PID 1160 set thread context of 3516	1160	NETSTAT.EXE	56

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO#A91641-MSKU9953077.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSTAT.EXE

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
1160	NETSTAT.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 50 IoCs

pid	Process
3244	PO#A91641-MSKU9953077.exe
3244	PO#A91641-MSKU9953077.exe
3244	PO#A91641-MSKU9953077.exe
3244	PO#A91641-MSKU9953077.exe
4448	PO#A91641-MSKU9953077.exe
4448	PO#A91641-MSKU9953077.exe
4448	PO#A91641-MSKU9953077.exe
4448	PO#A91641-MSKU9953077.exe
4448	PO#A91641-MSKU9953077.exe
4448	PO#A91641-MSKU9953077.exe
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE
1160	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4448	PO#A91641-MSKU9953077.exe
4448	PO#A91641-MSKU9953077.exe
4448	PO#A91641-MSKU9953077.exe
4448	PO#A91641-MSKU9953077.exe
1160	NETSTAT.EXE
1160	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	3244	PO#A91641-MSKU9953077.exe
Token: SeDebugPrivilege	4448	PO#A91641-MSKU9953077.exe
Token: SeDebugPrivilege	1160	NETSTAT.EXE
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3244	PO#A91641-MSKU9953077.exe
3244	PO#A91641-MSKU9953077.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3516	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3244 wrote to memory of 4416	3244	PO#A91641-MSKU9953077.exe	98
PID 3244 wrote to memory of 4416	3244	PO#A91641-MSKU9953077.exe	98
PID 3244 wrote to memory of 4416	3244	PO#A91641-MSKU9953077.exe	98
PID 3244 wrote to memory of 4448	3244	PO#A91641-MSKU9953077.exe	99
PID 3244 wrote to memory of 4448	3244	PO#A91641-MSKU9953077.exe	99
PID 3244 wrote to memory of 4448	3244	PO#A91641-MSKU9953077.exe	99
PID 3244 wrote to memory of 4448	3244	PO#A91641-MSKU9953077.exe	99
PID 3244 wrote to memory of 4448	3244	PO#A91641-MSKU9953077.exe	99
PID 3244 wrote to memory of 4448	3244	PO#A91641-MSKU9953077.exe	99
PID 3516 wrote to memory of 1160	3516	Explorer.EXE	101
PID 3516 wrote to memory of 1160	3516	Explorer.EXE	101
PID 3516 wrote to memory of 1160	3516	Explorer.EXE	101
PID 1160 wrote to memory of 1656	1160	NETSTAT.EXE	102
PID 1160 wrote to memory of 1656	1160	NETSTAT.EXE	102
PID 1160 wrote to memory of 1656	1160	NETSTAT.EXE	102

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Users\Admin\AppData\Local\Temp\PO#A91641-MSKU9953077.exe
  "C:\Users\Admin\AppData\Local\Temp\PO#A91641-MSKU9953077.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3244
- - C:\Users\Admin\AppData\Local\Temp\PO#A91641-MSKU9953077.exe
    "C:\Users\Admin\AppData\Local\Temp\PO#A91641-MSKU9953077.exe"
    3⤵
    PID:4416
- - C:\Users\Admin\AppData\Local\Temp\PO#A91641-MSKU9953077.exe
    "C:\Users\Admin\AppData\Local\Temp\PO#A91641-MSKU9953077.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4448
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:2932
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1160
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\PO#A91641-MSKU9953077.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/1160-28-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1160-26-0x00000000006B0000-0x00000000006BB000-memory.dmp

Filesize
44KB

Download
memory/1160-27-0x00000000006B0000-0x00000000006BB000-memory.dmp

Filesize
44KB

Download
memory/3244-12-0x0000000006670000-0x00000000066D8000-memory.dmp

Filesize
416KB

Download
memory/3244-0-0x0000000074BEE000-0x0000000074BEF000-memory.dmp

Filesize
4KB

Download
memory/3244-5-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3244-6-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3244-7-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3244-8-0x0000000008660000-0x00000000086FC000-memory.dmp

Filesize
624KB

Download
memory/3244-9-0x00000000085D0000-0x00000000085DC000-memory.dmp

Filesize
48KB

Download
memory/3244-10-0x0000000074BEE000-0x0000000074BEF000-memory.dmp

Filesize
4KB

Download
memory/3244-11-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3244-3-0x00000000052E0000-0x0000000005372000-memory.dmp

Filesize
584KB

Download
memory/3244-13-0x00000000066F0000-0x0000000006726000-memory.dmp

Filesize
216KB

Download
memory/3244-4-0x0000000005230000-0x000000000523A000-memory.dmp

Filesize
40KB

Download
memory/3244-16-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3244-1-0x0000000000820000-0x0000000000892000-memory.dmp

Filesize
456KB

Download
memory/3244-2-0x0000000005890000-0x0000000005E34000-memory.dmp

Filesize
5.6MB

Download
memory/3516-35-0x0000000003560000-0x0000000003636000-memory.dmp

Filesize
856KB

Download
memory/3516-33-0x0000000003560000-0x0000000003636000-memory.dmp

Filesize
856KB

Download
memory/3516-31-0x000000000AE90000-0x000000000AFD8000-memory.dmp

Filesize
1.3MB

Download
memory/3516-29-0x0000000008730000-0x00000000088BA000-memory.dmp

Filesize
1.5MB

Download
memory/3516-25-0x000000000AE90000-0x000000000AFD8000-memory.dmp

Filesize
1.3MB

Download
memory/3516-21-0x0000000008730000-0x00000000088BA000-memory.dmp

Filesize
1.5MB

Download
memory/3516-38-0x0000000003560000-0x0000000003636000-memory.dmp

Filesize
856KB

Download
memory/4448-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4448-24-0x0000000000FE0000-0x0000000000FF5000-memory.dmp

Filesize
84KB

Download
memory/4448-23-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4448-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4448-20-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download
memory/4448-17-0x0000000001060000-0x00000000013AA000-memory.dmp

Filesize
3.3MB

Download

Analysis

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