formbook | dfef95aace8bc4b84638abf73bdfb24e3108f8fef08ad6129546a2ffe9c13341

General

Target

image004.exe
Size

15KB
MD5

05a64724337efd906ee2b96271794fb0
SHA1

b4e5d9f568e75f03ec6d6162e7cccc5fb51f1dfa
SHA256

dfef95aace8bc4b84638abf73bdfb24e3108f8fef08ad6129546a2ffe9c13341
SHA512

08977076cb53c9b7770e3860debcea22246a2e05b5d9b6e0a4783dd4528aa6af511ea086ec628ccefac899afe0e9f9694d8e265380e529bf7e1ca6e9192b6b87
SSDEEP

192:bGbLYuZbHzxQMKek0LhkgSleWk8Lngcq2/4yTLzzcyrwzc5+45ZPw4d+U43P25:AkXv0LhQoWfgcq2wyDwySc5+c1h4+

Score

10^/10

formbook s2h0 persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

s2h0

Decoy

aPAdsgRiM5x/yL/X5cm0VzOos18VCw==

dSikZMo3DX9YnT+x5r59

MuZXDW3373RVmozB4qxFB4TP

etxRTtBOmdLv9Ji3bO4a6w==

cV0TtnwKShHy

sMCRJpM3pLEzQGF7OA==

8/z1y5az+w6oJEvAnYJg

yStNFwgJB8qEsJ63zrBFB4TP

cTzYzR2KJdPl

XmERsrbQFFc8I6TW3/oJz61Zs18VCw==

kRd/feIxF5FObwVf1+Y=

OKPBaPCEyH0oM6Hn7oMSUso=

CgmzVibsv66DWPAUrXU4U8I=

sS1SCHE+uG6FD0TAnYJg

+KVTMo4N6VwErccB

lMaVXfE6YN3aeg==

YdgFnvPAI1QPrdAn34YUY8Gohu68JYOv

KzcRJLlCQHwbpOQqYoCB+Bp7yA==

wbtcD0JabN3m

vNfSa+yFzotDbAVf1+Y=

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

image004.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Control Panel\International\Geo\Nation	image004.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

image004.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Gjzsxrkx = "\"C:\\Users\\Admin\\AppData\\Roaming\\Rnflpyebj\\Gjzsxrkx.exe\""	image004.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

image004.exeimage004.exehelp.exe

description	pid	process	target process
PID 1288 set thread context of 432	1288	image004.exe	image004.exe
PID 432 set thread context of 1212	432	image004.exe	Explorer.EXE
PID 432 set thread context of 1212	432	image004.exe	Explorer.EXE
PID 924 set thread context of 1212	924	help.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

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

help.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1214520366-621468234-4062160515-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	help.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exeimage004.exehelp.exe

pid process

820 powershell.exe
432 image004.exe
432 image004.exe
432 image004.exe
432 image004.exe
432 image004.exe
924 help.exe
924 help.exe
924 help.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

image004.exehelp.exe

pid process

432 image004.exe
432 image004.exe
432 image004.exe
432 image004.exe
924 help.exe
924 help.exe

pid	process
820	powershell.exe
432	image004.exe
432	image004.exe
432	image004.exe
432	image004.exe
432	image004.exe
924	help.exe
924	help.exe
924	help.exe

pid	process
1212	Explorer.EXE

pid	process
432	image004.exe
432	image004.exe
432	image004.exe
432	image004.exe
924	help.exe
924	help.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

image004.exepowershell.exeimage004.exehelp.exe

description	pid	process
Token: SeDebugPrivilege	1288	image004.exe
Token: SeDebugPrivilege	820	powershell.exe
Token: SeDebugPrivilege	432	image004.exe
Token: SeDebugPrivilege	924	help.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

image004.exeimage004.exe

description	pid	process	target process
PID 1288 wrote to memory of 820	1288	image004.exe	powershell.exe
PID 1288 wrote to memory of 820	1288	image004.exe	powershell.exe
PID 1288 wrote to memory of 820	1288	image004.exe	powershell.exe
PID 1288 wrote to memory of 820	1288	image004.exe	powershell.exe
PID 1288 wrote to memory of 432	1288	image004.exe	image004.exe
PID 1288 wrote to memory of 432	1288	image004.exe	image004.exe
PID 1288 wrote to memory of 432	1288	image004.exe	image004.exe
PID 1288 wrote to memory of 432	1288	image004.exe	image004.exe
PID 1288 wrote to memory of 432	1288	image004.exe	image004.exe
PID 1288 wrote to memory of 432	1288	image004.exe	image004.exe
PID 1288 wrote to memory of 432	1288	image004.exe	image004.exe
PID 432 wrote to memory of 924	432	image004.exe	help.exe
PID 432 wrote to memory of 924	432	image004.exe	help.exe
PID 432 wrote to memory of 924	432	image004.exe	help.exe
PID 432 wrote to memory of 924	432	image004.exe	help.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
PID:1212

C:\Users\Admin\AppData\Local\Temp\image004.exe
"C:\Users\Admin\AppData\Local\Temp\image004.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1288

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAxAA==
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:820

C:\Users\Admin\AppData\Local\Temp\image004.exe
C:\Users\Admin\AppData\Local\Temp\image004.exe
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:432

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
4⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/432-71-0x0000000000880000-0x0000000000B83000-memory.dmp

Filesize
3.0MB

Download
memory/432-80-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/432-72-0x0000000000422000-0x0000000000424000-memory.dmp

Filesize
8KB

Download
memory/432-73-0x0000000000170000-0x0000000000180000-memory.dmp

Filesize
64KB

Download
memory/432-79-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/432-77-0x0000000000360000-0x0000000000370000-memory.dmp

Filesize
64KB

Download
memory/432-76-0x0000000000422000-0x0000000000424000-memory.dmp

Filesize
8KB

Download
memory/432-62-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/432-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/432-65-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/432-66-0x00000000004012B0-mapping.dmp

Download
memory/432-68-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/432-69-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/432-70-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/820-61-0x000000006E400000-0x000000006E9AB000-memory.dmp

Filesize
5.7MB

Download
memory/820-57-0x0000000000000000-mapping.dmp

Download
memory/820-59-0x000000006E400000-0x000000006E9AB000-memory.dmp

Filesize
5.7MB

Download
memory/820-60-0x000000006E400000-0x000000006E9AB000-memory.dmp

Filesize
5.7MB

Download
memory/924-83-0x00000000000C0000-0x00000000000ED000-memory.dmp

Filesize
180KB

Download
memory/924-82-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/924-84-0x0000000000980000-0x0000000000C83000-memory.dmp

Filesize
3.0MB

Download
memory/924-85-0x0000000000420000-0x00000000004AF000-memory.dmp

Filesize
572KB

Download
memory/924-87-0x00000000000C0000-0x00000000000ED000-memory.dmp

Filesize
180KB

Download
memory/924-81-0x0000000000000000-mapping.dmp

Download
memory/1212-74-0x00000000049A0000-0x0000000004AC8000-memory.dmp

Filesize
1.2MB

Download
memory/1212-78-0x0000000007670000-0x000000000781D000-memory.dmp

Filesize
1.7MB

Download
memory/1212-89-0x00000000063D0000-0x0000000006503000-memory.dmp

Filesize
1.2MB

Download
memory/1212-86-0x00000000063D0000-0x0000000006503000-memory.dmp

Filesize
1.2MB

Download
memory/1288-54-0x0000000000DA0000-0x0000000000DAA000-memory.dmp

Filesize
40KB

Download
memory/1288-55-0x0000000075551000-0x0000000075553000-memory.dmp

Filesize
8KB

Download
memory/1288-56-0x0000000005E70000-0x00000000060AA000-memory.dmp

Filesize
2.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads