formbook | 2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d

General

Target

2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d.exe
Size

280KB
MD5

8e4837c1af544798e66033ff94178202
SHA1

ba11a4cd9fee1517dec84041fd85fb0d9dcc0270
SHA256

2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d
SHA512

d56204d7765b0bedd4451cb4832967cd15609831c44b05ee7f96703db27261948cdb1cab3270328ae8fd466909541680b0e9f166ae170c55b6a9ee8b767298f4
SSDEEP

6144:/Ya6+fE/IWg+ZGjDmYS3g3qtKTaXig5hKFUCvuxK1Zj1SkG:/Y4fmI0G/oLXig5hEUVK1ZBFG

Score

10^/10

formbook xloader poub loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

poub

Decoy

WY0eksfISzRg4O6c+opnGL6gaw==

moRjn9ExtYi8UmUo+Tya

2vME+GedoxzFnuLXesUoVj4=

EvW4JWJ1NQ8nN3tA3SM=

2mK9efMZMgN1VOs=

8d0jua5b0J6AQEW7

/2cyThOd37DSTYMASDye4Q0t/Vs=

ral+tbIh2KKAQEW7

YLY9jsPtYB/FRmMo+Tya

R1WcElWAMtFxFrVqtZT2ZpIS9xRZNho=

KFXGg/T1pCC9GjrxUPTcjw==

8mMlK5nDwjjPFTP5jMtAtQ0t/Vs=

c7am8nhhlCo=

UW91trZj6dENxuRdpxOvW1Cf

sjOMUcvq6lYJCZEfV4euFzY=

62nBgPjdmWQkmWElww==

64E8JqA1aruSUvw=

NqI1reXpcR+REye0

8+y1oOsbjgSyEhjXUPTcjw==

Rx9by8gNBwN1VOs=

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

Xloader payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/704-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/856-73-0x0000000000090000-0x00000000000BC000-memory.dmp	xloader
behavioral1/memory/856-77-0x0000000000090000-0x00000000000BC000-memory.dmp	xloader

Adds policy 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\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmstp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\HJSDOL18N = "C:\\Program Files (x86)\\Spbc\\mfcnnex.exe"	cmstp.exe

Blocklisted process makes network request 2 IoCs

Processes:

cmstp.exe

flow pid process

11 856 cmstp.exe
19 856 cmstp.exe
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:

gpfxtha.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Control Panel\International\Geo\Nation gpfxtha.exe
Executes dropped EXE 2 IoCs

Processes:

gpfxtha.exegpfxtha.exe

pid process

1136 gpfxtha.exe
704 gpfxtha.exe
Loads dropped DLL 2 IoCs

Processes:

2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d.exegpfxtha.exe

pid process

1120 2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d.exe
1136 gpfxtha.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

flow	pid	process
11	856	cmstp.exe
19	856	cmstp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Control Panel\International\Geo\Nation	gpfxtha.exe

pid	process
1136	gpfxtha.exe
704	gpfxtha.exe

pid	process
1120	2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d.exe
1136	gpfxtha.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

gpfxtha.exegpfxtha.execmstp.exe

description	pid	process	target process
PID 1136 set thread context of 704	1136	gpfxtha.exe	gpfxtha.exe
PID 704 set thread context of 1444	704	gpfxtha.exe	Explorer.EXE
PID 856 set thread context of 1444	856	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)\Spbc\mfcnnex.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)\Spbc\mfcnnex.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-1-5-21-999675638-2867687379-27515722-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

gpfxtha.execmstp.exe

pid	process
704	gpfxtha.exe
704	gpfxtha.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

gpfxtha.exegpfxtha.execmstp.exe

pid process

1136 gpfxtha.exe
704 gpfxtha.exe
704 gpfxtha.exe
704 gpfxtha.exe
856 cmstp.exe
856 cmstp.exe
856 cmstp.exe
856 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

gpfxtha.execmstp.exe

description pid process

Token: SeDebugPrivilege 704 gpfxtha.exe
Token: SeDebugPrivilege 856 cmstp.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1444 Explorer.EXE
1444 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1444 Explorer.EXE
1444 Explorer.EXE

pid	process
1136	gpfxtha.exe
704	gpfxtha.exe
704	gpfxtha.exe
704	gpfxtha.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe
856	cmstp.exe

description	pid	process
Token: SeDebugPrivilege	704	gpfxtha.exe
Token: SeDebugPrivilege	856	cmstp.exe

pid	process
1444	Explorer.EXE
1444	Explorer.EXE

pid	process
1444	Explorer.EXE
1444	Explorer.EXE

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d.exegpfxtha.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1120 wrote to memory of 1136	1120	2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d.exe	gpfxtha.exe
PID 1120 wrote to memory of 1136	1120	2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d.exe	gpfxtha.exe
PID 1120 wrote to memory of 1136	1120	2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d.exe	gpfxtha.exe
PID 1120 wrote to memory of 1136	1120	2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d.exe	gpfxtha.exe
PID 1136 wrote to memory of 704	1136	gpfxtha.exe	gpfxtha.exe
PID 1136 wrote to memory of 704	1136	gpfxtha.exe	gpfxtha.exe
PID 1136 wrote to memory of 704	1136	gpfxtha.exe	gpfxtha.exe
PID 1136 wrote to memory of 704	1136	gpfxtha.exe	gpfxtha.exe
PID 1136 wrote to memory of 704	1136	gpfxtha.exe	gpfxtha.exe
PID 1444 wrote to memory of 856	1444	Explorer.EXE	cmstp.exe
PID 1444 wrote to memory of 856	1444	Explorer.EXE	cmstp.exe
PID 1444 wrote to memory of 856	1444	Explorer.EXE	cmstp.exe
PID 1444 wrote to memory of 856	1444	Explorer.EXE	cmstp.exe
PID 1444 wrote to memory of 856	1444	Explorer.EXE	cmstp.exe
PID 1444 wrote to memory of 856	1444	Explorer.EXE	cmstp.exe
PID 1444 wrote to memory of 856	1444	Explorer.EXE	cmstp.exe
PID 856 wrote to memory of 1512	856	cmstp.exe	cmd.exe
PID 856 wrote to memory of 1512	856	cmstp.exe	cmd.exe
PID 856 wrote to memory of 1512	856	cmstp.exe	cmd.exe
PID 856 wrote to memory of 1512	856	cmstp.exe	cmd.exe
PID 856 wrote to memory of 1012	856	cmstp.exe	Firefox.exe
PID 856 wrote to memory of 1012	856	cmstp.exe	Firefox.exe
PID 856 wrote to memory of 1012	856	cmstp.exe	Firefox.exe
PID 856 wrote to memory of 1012	856	cmstp.exe	Firefox.exe
PID 856 wrote to memory of 1012	856	cmstp.exe	Firefox.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

cmstp.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer cmstp.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cmstp.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1444

C:\Users\Admin\AppData\Local\Temp\2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d.exe
"C:\Users\Admin\AppData\Local\Temp\2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1120

C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe
"C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe" C:\Users\Admin\AppData\Local\Temp\aoigfqupgnb.bmp
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1136

C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe
"C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe"
4⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:704

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Adds policy Run key to start application
- Blocklisted process makes network request
- 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
- System policy modification
PID:856

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe"
3⤵
PID:1512

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1012

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

3

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

C:\Users\Admin\AppData\Local\Temp\aoigfqupgnb.bmp
Filesize
5KB

MD5
1eab44ab55b31a226a733b3b2098964d

SHA1
4cd920b4e150cae7d07f8b9868d49cc2da095345

SHA256
5b5fe85e87fd724e900aca5e51d35e0c855de2400be39f86763634b32737611a

SHA512
c4866e02a9d6d2d1342d09871093cb18e765e9bb0b9b1e93e43e8e69be1c9bcb1fe2b9376cbe222a38e8c94cce87b279481106e7781007b0d9732bf224609d79

Download Submit
C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe
Filesize
112KB

MD5
58a53663c36b38e16632b01b6e04171f

SHA1
b93818768f84a83aa9718300bf7f243990be96b7

SHA256
d2521702919bed257020d11081d927dea7d264ce3fa2c1d402ef63092b4137b4

SHA512
2a59bb5ec7bb35bd8785da0c2bf938e3e41d075fde32659125c817f0e49a2618f306c374775f9eabdc31b1490ef0296bac3fcc3ff3229a5b608b2ad41e6c13ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe
Filesize
112KB

MD5
58a53663c36b38e16632b01b6e04171f

SHA1
b93818768f84a83aa9718300bf7f243990be96b7

SHA256
d2521702919bed257020d11081d927dea7d264ce3fa2c1d402ef63092b4137b4

SHA512
2a59bb5ec7bb35bd8785da0c2bf938e3e41d075fde32659125c817f0e49a2618f306c374775f9eabdc31b1490ef0296bac3fcc3ff3229a5b608b2ad41e6c13ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe
Filesize
112KB

MD5
58a53663c36b38e16632b01b6e04171f

SHA1
b93818768f84a83aa9718300bf7f243990be96b7

SHA256
d2521702919bed257020d11081d927dea7d264ce3fa2c1d402ef63092b4137b4

SHA512
2a59bb5ec7bb35bd8785da0c2bf938e3e41d075fde32659125c817f0e49a2618f306c374775f9eabdc31b1490ef0296bac3fcc3ff3229a5b608b2ad41e6c13ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\vjoul.h
Filesize
196KB

MD5
3e47a8bda5357626cd12360d155bf606

SHA1
2fca349609e4d116e4cc493811b80670d9fc6b47

SHA256
649820e7856bc462f79cf32ac90213384b498a6e0efc2dbd66d8837509352b59

SHA512
51593e2c98b44ff6784244e82f8c4b906c61e6606d785311e88cfcaa1e6bf6b4fa2bdff84a8e8f0296a0963f7329ea54c8866e508e1253754428f10adb4bc029

Download Submit
\Users\Admin\AppData\Local\Temp\gpfxtha.exe
Filesize
112KB

MD5
58a53663c36b38e16632b01b6e04171f

SHA1
b93818768f84a83aa9718300bf7f243990be96b7

SHA256
d2521702919bed257020d11081d927dea7d264ce3fa2c1d402ef63092b4137b4

SHA512
2a59bb5ec7bb35bd8785da0c2bf938e3e41d075fde32659125c817f0e49a2618f306c374775f9eabdc31b1490ef0296bac3fcc3ff3229a5b608b2ad41e6c13ab

Download Submit
\Users\Admin\AppData\Local\Temp\gpfxtha.exe
Filesize
112KB

MD5
58a53663c36b38e16632b01b6e04171f

SHA1
b93818768f84a83aa9718300bf7f243990be96b7

SHA256
d2521702919bed257020d11081d927dea7d264ce3fa2c1d402ef63092b4137b4

SHA512
2a59bb5ec7bb35bd8785da0c2bf938e3e41d075fde32659125c817f0e49a2618f306c374775f9eabdc31b1490ef0296bac3fcc3ff3229a5b608b2ad41e6c13ab

Download Submit
memory/704-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/704-66-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/704-63-0x000000000041FF10-mapping.dmp

Download
memory/704-67-0x0000000000340000-0x0000000000351000-memory.dmp

Filesize
68KB

Download
memory/856-69-0x0000000000000000-mapping.dmp

Download
memory/856-72-0x00000000004C0000-0x00000000004D8000-memory.dmp

Filesize
96KB

Download
memory/856-73-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/856-74-0x0000000001F30000-0x0000000002233000-memory.dmp

Filesize
3.0MB

Download
memory/856-75-0x0000000001CF0000-0x0000000001D80000-memory.dmp

Filesize
576KB

Download
memory/856-77-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/1120-54-0x0000000075351000-0x0000000075353000-memory.dmp

Filesize
8KB

Download
memory/1136-56-0x0000000000000000-mapping.dmp

Download
memory/1444-68-0x0000000004B50000-0x0000000004CF7000-memory.dmp

Filesize
1.7MB

Download
memory/1444-76-0x0000000007570000-0x00000000076ED000-memory.dmp

Filesize
1.5MB

Download
memory/1444-78-0x0000000007570000-0x00000000076ED000-memory.dmp

Filesize
1.5MB

Download
memory/1512-71-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads