formbook | d4d681d100d595cc30c32b127eb1bcc983dec0f3f936bc037c1d5abcfea6ad65

General

Target

PO098765678.exe
Size

59KB
MD5

24a7f8f81ef537691cdf1b6c9deaba07
SHA1

066086ecc09525ebdffed134a7d100fc25a6b6b0
SHA256

d4d681d100d595cc30c32b127eb1bcc983dec0f3f936bc037c1d5abcfea6ad65
SHA512

467632e45b719aea3d20e56aab6acca193a79c160c3c14decd973ed7d2172e59f3f7bb384271d8a7eb3e262e1fbfc2ee8d3d7d1049714e91236a0fddc2acc67b
SSDEEP

1536:ddVdj6XqNKAuDUaQl+kzdC9GiZQWSwi/fUpS/fX/MN2:dpQAuis1Jy///f/Mc

Score

10^/10

formbook xloader zzun loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

zzun

Decoy

JnNtRHyNupy0GqRzAcasu7hb4rc=

Qv593NGLE7p9UNSaVkPXljAJm2QCNnc=

ePArIFWvjkkMgVEVhw4M4Jk=

26rqUwJ7dD0AiDI=

pBAxMHeK741QFw==

kHD7TPt5846pUMTX

56UnjFjHL1i0j659h3LymRnHpQj+SshC

4vKlKHflPqmWXRbrRwfPtrhb4rc=

6LBd4qButFAi

phMzGll8Ue7Fu+inq5cdnPaSugG3

NKswiQGCvZoG5FgsdHEI

rtTHnuUY8M1qVcXV

SOmECrlAt2oGAA==

L1ep9adutFAi

/UE+/AyvE6uEl28weFI=

IP+xMPQxJR4NE6TK

xvW5GN9/rqA5YUoOVt185Sf7Uw==

fRFNW9DhxL6VF7LA

KFYTfkaY741QFw==

W4JGvMBmt2oGAA==

Extracted

Family

xloader

Version

2.9

Campaign

zzun

Decoy

JnNtRHyNupy0GqRzAcasu7hb4rc=

Qv593NGLE7p9UNSaVkPXljAJm2QCNnc=

ePArIFWvjkkMgVEVhw4M4Jk=

26rqUwJ7dD0AiDI=

pBAxMHeK741QFw==

kHD7TPt5846pUMTX

56UnjFjHL1i0j659h3LymRnHpQj+SshC

4vKlKHflPqmWXRbrRwfPtrhb4rc=

6LBd4qButFAi

phMzGll8Ue7Fu+inq5cdnPaSugG3

NKswiQGCvZoG5FgsdHEI

rtTHnuUY8M1qVcXV

SOmECrlAt2oGAA==

L1ep9adutFAi

/UE+/AyvE6uEl28weFI=

IP+xMPQxJR4NE6TK

xvW5GN9/rqA5YUoOVt185Sf7Uw==

fRFNW9DhxL6VF7LA

KFYTfkaY741QFw==

W4JGvMBmt2oGAA==

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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3372-147-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/3372-149-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4572-155-0x0000000000860000-0x000000000088C000-memory.dmp	xloader
behavioral2/memory/4572-158-0x0000000000860000-0x000000000088C000-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:

help.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	help.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\RJ_PYBFPN4BP = "C:\\Program Files (x86)\\Bnzk\\regsvcxt5l5n.exe"	help.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

PO098765678.exePO098765678.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	PO098765678.exe
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	PO098765678.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

PO098765678.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Nwvmrezq = "\"C:\\Users\\Admin\\AppData\\Roaming\\Nuwuusv\\Nwvmrezq.exe\""	PO098765678.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO098765678.exePO098765678.exehelp.exe

description	pid	process	target process
PID 4260 set thread context of 3372	4260	PO098765678.exe	PO098765678.exe
PID 3372 set thread context of 3048	3372	PO098765678.exe	Explorer.EXE
PID 4572 set thread context of 3048	4572	help.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

help.exe

description ioc process

File opened for modification C:\Program Files (x86)\Bnzk\regsvcxt5l5n.exe help.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)\Bnzk\regsvcxt5l5n.exe	help.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

help.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	help.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

Processes:

powershell.exePO098765678.exePO098765678.exehelp.exe

pid	process
3388	powershell.exe
3388	powershell.exe
4260	PO098765678.exe
4260	PO098765678.exe
4260	PO098765678.exe
4260	PO098765678.exe
3372	PO098765678.exe
3372	PO098765678.exe
3372	PO098765678.exe
3372	PO098765678.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3048 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

PO098765678.exehelp.exe

pid process

3372 PO098765678.exe
3372 PO098765678.exe
3372 PO098765678.exe
4572 help.exe
4572 help.exe
4572 help.exe
4572 help.exe

pid	process
3048	Explorer.EXE

pid	process
3372	PO098765678.exe
3372	PO098765678.exe
3372	PO098765678.exe
4572	help.exe
4572	help.exe
4572	help.exe
4572	help.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

PO098765678.exepowershell.exePO098765678.exehelp.exe

description	pid	process
Token: SeDebugPrivilege	4260	PO098765678.exe
Token: SeDebugPrivilege	3388	powershell.exe
Token: SeDebugPrivilege	3372	PO098765678.exe
Token: SeDebugPrivilege	4572	help.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

PO098765678.exeExplorer.EXEhelp.exe

description	pid	process	target process
PID 4260 wrote to memory of 3388	4260	PO098765678.exe	powershell.exe
PID 4260 wrote to memory of 3388	4260	PO098765678.exe	powershell.exe
PID 4260 wrote to memory of 3388	4260	PO098765678.exe	powershell.exe
PID 4260 wrote to memory of 3720	4260	PO098765678.exe	PO098765678.exe
PID 4260 wrote to memory of 3720	4260	PO098765678.exe	PO098765678.exe
PID 4260 wrote to memory of 3720	4260	PO098765678.exe	PO098765678.exe
PID 4260 wrote to memory of 3056	4260	PO098765678.exe	PO098765678.exe
PID 4260 wrote to memory of 3056	4260	PO098765678.exe	PO098765678.exe
PID 4260 wrote to memory of 3056	4260	PO098765678.exe	PO098765678.exe
PID 4260 wrote to memory of 3372	4260	PO098765678.exe	PO098765678.exe
PID 4260 wrote to memory of 3372	4260	PO098765678.exe	PO098765678.exe
PID 4260 wrote to memory of 3372	4260	PO098765678.exe	PO098765678.exe
PID 4260 wrote to memory of 3372	4260	PO098765678.exe	PO098765678.exe
PID 4260 wrote to memory of 3372	4260	PO098765678.exe	PO098765678.exe
PID 4260 wrote to memory of 3372	4260	PO098765678.exe	PO098765678.exe
PID 3048 wrote to memory of 4572	3048	Explorer.EXE	help.exe
PID 3048 wrote to memory of 4572	3048	Explorer.EXE	help.exe
PID 3048 wrote to memory of 4572	3048	Explorer.EXE	help.exe
PID 4572 wrote to memory of 5076	4572	help.exe	cmd.exe
PID 4572 wrote to memory of 5076	4572	help.exe	cmd.exe
PID 4572 wrote to memory of 5076	4572	help.exe	cmd.exe
PID 4572 wrote to memory of 3452	4572	help.exe	cmd.exe
PID 4572 wrote to memory of 3452	4572	help.exe	cmd.exe
PID 4572 wrote to memory of 3452	4572	help.exe	cmd.exe
PID 4572 wrote to memory of 4540	4572	help.exe	cmd.exe
PID 4572 wrote to memory of 4540	4572	help.exe	cmd.exe
PID 4572 wrote to memory of 4540	4572	help.exe	cmd.exe
PID 4572 wrote to memory of 4724	4572	help.exe	Firefox.exe
PID 4572 wrote to memory of 4724	4572	help.exe	Firefox.exe
PID 4572 wrote to memory of 4724	4572	help.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3048

C:\Users\Admin\AppData\Local\Temp\PO098765678.exe
"C:\Users\Admin\AppData\Local\Temp\PO098765678.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4260

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQA1AA==
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3388

C:\Users\Admin\AppData\Local\Temp\PO098765678.exe
C:\Users\Admin\AppData\Local\Temp\PO098765678.exe
3⤵
PID:3720

C:\Users\Admin\AppData\Local\Temp\PO098765678.exe
C:\Users\Admin\AppData\Local\Temp\PO098765678.exe
3⤵
PID:3056

C:\Users\Admin\AppData\Local\Temp\PO098765678.exe
C:\Users\Admin\AppData\Local\Temp\PO098765678.exe
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3372

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.exe"
2⤵
- Adds policy 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:4572

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO098765678.exe"
3⤵
PID:5076

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:3452

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:4540

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4724

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

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\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
48KB

MD5
349e6eb110e34a08924d92f6b334801d

SHA1
bdfb289daff51890cc71697b6322aa4b35ec9169

SHA256
c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

SHA512
2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

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memory/3048-161-0x00000000084D0000-0x0000000008613000-memory.dmp

Filesize
1.3MB

Download
memory/3048-160-0x00000000084D0000-0x0000000008613000-memory.dmp

Filesize
1.3MB

Download
memory/3048-152-0x00000000031D0000-0x0000000003306000-memory.dmp

Filesize
1.2MB

Download
memory/3056-145-0x0000000000000000-mapping.dmp

Download
memory/3372-151-0x0000000000C10000-0x0000000000C21000-memory.dmp

Filesize
68KB

Download
memory/3372-150-0x00000000011F0000-0x000000000153A000-memory.dmp

Filesize
3.3MB

Download
memory/3372-149-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3372-147-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3372-146-0x0000000000000000-mapping.dmp

Download
memory/3388-140-0x0000000007A00000-0x000000000807A000-memory.dmp

Filesize
6.5MB

Download
memory/3388-136-0x0000000005370000-0x0000000005998000-memory.dmp

Filesize
6.2MB

Download
memory/3388-134-0x0000000000000000-mapping.dmp

Download
memory/3388-135-0x0000000004BF0000-0x0000000004C26000-memory.dmp

Filesize
216KB

Download
memory/3388-141-0x00000000066A0000-0x00000000066BA000-memory.dmp

Filesize
104KB

Download
memory/3388-137-0x0000000005AC0000-0x0000000005B26000-memory.dmp

Filesize
408KB

Download
memory/3388-139-0x00000000061B0000-0x00000000061CE000-memory.dmp

Filesize
120KB

Download
memory/3388-138-0x0000000005BA0000-0x0000000005C06000-memory.dmp

Filesize
408KB

Download
memory/3452-162-0x0000000000000000-mapping.dmp

Download
memory/3720-144-0x0000000000000000-mapping.dmp

Download
memory/4260-133-0x00000000062A0000-0x00000000062C2000-memory.dmp

Filesize
136KB

Download
memory/4260-132-0x0000000000DC0000-0x0000000000DD4000-memory.dmp

Filesize
80KB

Download
memory/4260-143-0x0000000007420000-0x00000000079C4000-memory.dmp

Filesize
5.6MB

Download
memory/4260-142-0x0000000006950000-0x00000000069E2000-memory.dmp

Filesize
584KB

Download
memory/4540-164-0x0000000000000000-mapping.dmp

Download
memory/4572-155-0x0000000000860000-0x000000000088C000-memory.dmp

Filesize
176KB

Download
memory/4572-158-0x0000000000860000-0x000000000088C000-memory.dmp

Filesize
176KB

Download
memory/4572-159-0x0000000000E70000-0x0000000000F00000-memory.dmp

Filesize
576KB

Download
memory/4572-157-0x00000000013C0000-0x000000000170A000-memory.dmp

Filesize
3.3MB

Download
memory/4572-154-0x0000000000940000-0x0000000000947000-memory.dmp

Filesize
28KB

Download
memory/4572-153-0x0000000000000000-mapping.dmp

Download
memory/5076-156-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads