formbook | 55515fcdf9db3576553c72878e05ce6ac03bdf8fd7d8ce1521803d2829c18b75

General

Target

soa.exe
Size

525KB
MD5

93d8f2525be4725c994a7709cb2e3485
SHA1

17eb478f73c8fbfcae342a3039343c2b3575ab99
SHA256

55515fcdf9db3576553c72878e05ce6ac03bdf8fd7d8ce1521803d2829c18b75
SHA512

76066fea9d90775bfd5d6b03ed078b21e9cb775090ce3c8f4cc879e1c25ab987878b7252d2fa3e6fe0b1826252d7152ab82719219b1a2d8261b1da03d409d48c

Score

10^/10

formbook xloader gfv7 loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

gfv7

Decoy

hd4AZDZ3XeSkZ9w0NRn2+JU=

6iAxmGKdumxFEgwp

jM6QcxNUSeCKaUdvvh3g9mffhosQ

d4CC0LS0DjTJS8FdXqd3soM=

S1LPlXEIJY52Og==

doeO7AimsF0NEvFgnIV5

W2TlzH/byHtUU3B7tw==

Y2RAbyZjex2qj6GQv4Q=

ftoOsCpZdfmALQ==

4kqL8v/6rDj8Ohs/wAjkb0gD5Gfiww==

8mVs/AkvwLnIWp4=

yfqAazgHioT8b9yHSKpLDtgY

EyWD5F+Wu3L0xq/VJXgdlnFvBDdUz5WM

jn9ty+pdRNdtcDhJ5k8nwZofm4EJ

s9XVNv4/aRDBUx4w

+vHFE7Fw1rnIWp4=

wC395Yvi6G/3yoWRGW1USxzshi3Dyw==

jcbufIN91gHAUK1RYUMYIdyqpDlUz5WM

iIyoIvZNXwPNmBlBxGk6+A==

C/hTD8h/KWLiMW4Mt/joXyz23Q==

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Xloader Payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1120-63-0x000000000041F810-mapping.dmp	xloader
behavioral1/memory/1120-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1120-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/964-72-0x0000000000090000-0x00000000000BC000-memory.dmp	xloader
behavioral1/memory/964-77-0x0000000000090000-0x00000000000BC000-memory.dmp	xloader

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:

soa.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation soa.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1824 cmd.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	soa.exe

pid	process
1824	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	cmstp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\F8TPZ41840HX = "C:\\Program Files (x86)\\Xmrrp8zlp\\mfconux.exe"	cmstp.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

soa.exesoa.execmstp.exe

description	pid	process	target process
PID 1092 set thread context of 1120	1092	soa.exe	soa.exe
PID 1120 set thread context of 1276	1120	soa.exe	Explorer.EXE
PID 964 set thread context of 1276	964	cmstp.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cmstp.exe

description ioc process

File opened for modification C:\Program Files (x86)\Xmrrp8zlp\mfconux.exe cmstp.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Program Files (x86)\Xmrrp8zlp\mfconux.exe	cmstp.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

soa.execmstp.exe

pid	process
1120	soa.exe
1120	soa.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe
964	cmstp.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

soa.execmstp.exe

pid process

1120 soa.exe
1120 soa.exe
1120 soa.exe
964 cmstp.exe
964 cmstp.exe
964 cmstp.exe
964 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

soa.execmstp.exe

description pid process

Token: SeDebugPrivilege 1120 soa.exe
Token: SeDebugPrivilege 964 cmstp.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1276 Explorer.EXE
1276 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1276 Explorer.EXE
1276 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1120	soa.exe
Token: SeDebugPrivilege	964	cmstp.exe

pid	process
1276	Explorer.EXE
1276	Explorer.EXE

pid	process
1276	Explorer.EXE
1276	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

soa.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1092 wrote to memory of 1120	1092	soa.exe	soa.exe
PID 1092 wrote to memory of 1120	1092	soa.exe	soa.exe
PID 1092 wrote to memory of 1120	1092	soa.exe	soa.exe
PID 1092 wrote to memory of 1120	1092	soa.exe	soa.exe
PID 1092 wrote to memory of 1120	1092	soa.exe	soa.exe
PID 1092 wrote to memory of 1120	1092	soa.exe	soa.exe
PID 1092 wrote to memory of 1120	1092	soa.exe	soa.exe
PID 1276 wrote to memory of 964	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 964	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 964	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 964	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 964	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 964	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 964	1276	Explorer.EXE	cmstp.exe
PID 964 wrote to memory of 1824	964	cmstp.exe	cmd.exe
PID 964 wrote to memory of 1824	964	cmstp.exe	cmd.exe
PID 964 wrote to memory of 1824	964	cmstp.exe	cmd.exe
PID 964 wrote to memory of 1824	964	cmstp.exe	cmd.exe
PID 964 wrote to memory of 1472	964	cmstp.exe	Firefox.exe
PID 964 wrote to memory of 1472	964	cmstp.exe	Firefox.exe
PID 964 wrote to memory of 1472	964	cmstp.exe	Firefox.exe
PID 964 wrote to memory of 1472	964	cmstp.exe	Firefox.exe
PID 964 wrote to memory of 1472	964	cmstp.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1276

C:\Users\Admin\AppData\Local\Temp\soa.exe
"C:\Users\Admin\AppData\Local\Temp\soa.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1092

C:\Users\Admin\AppData\Local\Temp\soa.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1120

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:964

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\soa.exe"
3⤵
- Deletes itself
PID:1824

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1472

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

memory/964-69-0x0000000000000000-mapping.dmp

Download
memory/964-77-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/964-75-0x0000000001DE0000-0x0000000001E70000-memory.dmp

Filesize
576KB

Download
memory/964-74-0x0000000001F80000-0x0000000002283000-memory.dmp

Filesize
3.0MB

Download
memory/964-72-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/964-71-0x00000000003D0000-0x00000000003E8000-memory.dmp

Filesize
96KB

Download
memory/1092-55-0x0000000075F61000-0x0000000075F63000-memory.dmp

Filesize
8KB

Download
memory/1092-56-0x0000000000A90000-0x0000000000A9A000-memory.dmp

Filesize
40KB

Download
memory/1092-57-0x0000000005510000-0x0000000005596000-memory.dmp

Filesize
536KB

Download
memory/1092-58-0x0000000000C40000-0x0000000000C72000-memory.dmp

Filesize
200KB

Download
memory/1092-54-0x0000000000C80000-0x0000000000D0A000-memory.dmp

Filesize
552KB

Download
memory/1120-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1120-67-0x0000000000140000-0x0000000000151000-memory.dmp

Filesize
68KB

Download
memory/1120-66-0x0000000000D10000-0x0000000001013000-memory.dmp

Filesize
3.0MB

Download
memory/1120-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1120-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1120-63-0x000000000041F810-mapping.dmp

Download
memory/1120-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1276-68-0x00000000049A0000-0x0000000004AAA000-memory.dmp

Filesize
1.0MB

Download
memory/1276-76-0x0000000004EE0000-0x0000000004FE5000-memory.dmp

Filesize
1.0MB

Download
memory/1276-78-0x0000000004EE0000-0x0000000004FE5000-memory.dmp

Filesize
1.0MB

Download
memory/1824-73-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads