formbook | be8e8f4846b6b166d049c45dba8a91323aac80bc6fb01889de7f99442a577e1a

General

Target

SecuriteInfo.com.FileRepMalware.16929.9956.exe
Size

272KB
MD5

f2455fcb7954e649589e7406fd5acc97
SHA1

2532f710ed4ee7bae1be0f8726b4d599fda03973
SHA256

be8e8f4846b6b166d049c45dba8a91323aac80bc6fb01889de7f99442a577e1a
SHA512

b3ad6211317fa9159adb8a0a9a2486d091bc56bce288a0843005a90e761f4832d34b60ee28b5fd2c5b4bac5ac2962c144051de99f264bc4d2f6311bfb7711e5a
SSDEEP

6144:QBn1e3XWMCcAYtE3R0n0OZL/mS3SnBLOag9YMHLcxzcsc:goGaAYt4OrgO5Zcxzcsc

Score

10^/10

formbook henz rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

henz

Decoy

IxWMb+jVsoinShuZJzk=

TPfKgQZ//oGnKr/J

EsK0WxD5kY65XOW1Td/5CxSUpCUytR7M

KebSmiCP9p8yUw==

HAt/ljkEuqMLHOLCi53Pv8MKX9qk

CY4ogZTwJc4vSw==

WWDIx5UYUDyepntE0YIAPca3/rI=

+Pkr01Lfb2rME7bL

S5nyK0p8jS2xdwQ=

W/oqvlO57LfkLcLHnQ==

zrrwtqkTLwxulm4l8FGopw==

AqucYext8bzFbOKthIm8E6gfVkUHxKY=

OfnjeDs78+RTcz4OHRl+

XKf1wwpZR5hLLjHgmUGOpQ==

JMyhSLoJPTCwn5o9zX2d8i1+

Wk54MBsDhWSVbnIRkQ==

7aaYR/tOhh9piTw5/KHSRwuK2iqgafw7pQ==

hH/EYxN+jC2xdwQ=

S0F4ORqDjS2xdwQ=

0o/UwXnuJ+sJp0cOHRl+

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Executes dropped EXE 2 IoCs

Processes:

eubkfbzr.exeeubkfbzr.exe

pid process

3804 eubkfbzr.exe
2836 eubkfbzr.exe

pid	process
3804	eubkfbzr.exe
2836	eubkfbzr.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:

eubkfbzr.exe

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

Suspicious use of SetThreadContext 3 IoCs

Processes:

eubkfbzr.exeeubkfbzr.exerundll32.exe

description	pid	process	target process
PID 3804 set thread context of 2836	3804	eubkfbzr.exe	eubkfbzr.exe
PID 2836 set thread context of 3064	2836	eubkfbzr.exe	Explorer.EXE
PID 3916 set thread context of 3064	3916	rundll32.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:

rundll32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 60 IoCs

Processes:

eubkfbzr.exerundll32.exe

pid	process
2836	eubkfbzr.exe
2836	eubkfbzr.exe
2836	eubkfbzr.exe
2836	eubkfbzr.exe
2836	eubkfbzr.exe
2836	eubkfbzr.exe
2836	eubkfbzr.exe
2836	eubkfbzr.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3064 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

eubkfbzr.exeeubkfbzr.exerundll32.exe

pid process

3804 eubkfbzr.exe
2836 eubkfbzr.exe
2836 eubkfbzr.exe
2836 eubkfbzr.exe
3916 rundll32.exe
3916 rundll32.exe
3916 rundll32.exe
3916 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

eubkfbzr.exerundll32.exe

description pid process

Token: SeDebugPrivilege 2836 eubkfbzr.exe
Token: SeDebugPrivilege 3916 rundll32.exe

pid	process
3064	Explorer.EXE

pid	process
3804	eubkfbzr.exe
2836	eubkfbzr.exe
2836	eubkfbzr.exe
2836	eubkfbzr.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe
3916	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	2836	eubkfbzr.exe
Token: SeDebugPrivilege	3916	rundll32.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

SecuriteInfo.com.FileRepMalware.16929.9956.exeeubkfbzr.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 644 wrote to memory of 3804	644	SecuriteInfo.com.FileRepMalware.16929.9956.exe	eubkfbzr.exe
PID 644 wrote to memory of 3804	644	SecuriteInfo.com.FileRepMalware.16929.9956.exe	eubkfbzr.exe
PID 644 wrote to memory of 3804	644	SecuriteInfo.com.FileRepMalware.16929.9956.exe	eubkfbzr.exe
PID 3804 wrote to memory of 2836	3804	eubkfbzr.exe	eubkfbzr.exe
PID 3804 wrote to memory of 2836	3804	eubkfbzr.exe	eubkfbzr.exe
PID 3804 wrote to memory of 2836	3804	eubkfbzr.exe	eubkfbzr.exe
PID 3804 wrote to memory of 2836	3804	eubkfbzr.exe	eubkfbzr.exe
PID 3064 wrote to memory of 3916	3064	Explorer.EXE	rundll32.exe
PID 3064 wrote to memory of 3916	3064	Explorer.EXE	rundll32.exe
PID 3064 wrote to memory of 3916	3064	Explorer.EXE	rundll32.exe
PID 3916 wrote to memory of 4412	3916	rundll32.exe	Firefox.exe
PID 3916 wrote to memory of 4412	3916	rundll32.exe	Firefox.exe
PID 3916 wrote to memory of 4412	3916	rundll32.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3064

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.FileRepMalware.16929.9956.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.FileRepMalware.16929.9956.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:644

C:\Users\Admin\AppData\Local\Temp\eubkfbzr.exe
"C:\Users\Admin\AppData\Local\Temp\eubkfbzr.exe" C:\Users\Admin\AppData\Local\Temp\qnhjmzefy.uas
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3804

C:\Users\Admin\AppData\Local\Temp\eubkfbzr.exe
"C:\Users\Admin\AppData\Local\Temp\eubkfbzr.exe" C:\Users\Admin\AppData\Local\Temp\qnhjmzefy.uas
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2836

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:4016

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3916

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\eubkfbzr.exe
Filesize
122KB

MD5
36acfdb1046bd68aa0e6cc2ab4e4c3bd

SHA1
75a07369397553b78f46752b160893893188dd90

SHA256
06437c9f7a08d1d71708fc123595278f2f3f8bc28a1984ef0020fe982f767f99

SHA512
06c47082dde926e47f60acf806e273f875804a1a28bc9d4a4df050a83a93700d8234e2cc97c4e4b2327010885fa0e959d3646c8936f78a78ca27a7d023e025d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\eubkfbzr.exe
Filesize
122KB

MD5
36acfdb1046bd68aa0e6cc2ab4e4c3bd

SHA1
75a07369397553b78f46752b160893893188dd90

SHA256
06437c9f7a08d1d71708fc123595278f2f3f8bc28a1984ef0020fe982f767f99

SHA512
06c47082dde926e47f60acf806e273f875804a1a28bc9d4a4df050a83a93700d8234e2cc97c4e4b2327010885fa0e959d3646c8936f78a78ca27a7d023e025d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\eubkfbzr.exe
Filesize
122KB

MD5
36acfdb1046bd68aa0e6cc2ab4e4c3bd

SHA1
75a07369397553b78f46752b160893893188dd90

SHA256
06437c9f7a08d1d71708fc123595278f2f3f8bc28a1984ef0020fe982f767f99

SHA512
06c47082dde926e47f60acf806e273f875804a1a28bc9d4a4df050a83a93700d8234e2cc97c4e4b2327010885fa0e959d3646c8936f78a78ca27a7d023e025d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\qnhjmzefy.uas
Filesize
5KB

MD5
5dda2bd9411b7a598e4f337c0686e569

SHA1
2dc7a54e3529ed07a06a736053222bed6b237409

SHA256
77e6fcdbbdefc770664309b65728a8a3bb8babd14dbf0f015b7f9ea7528b9db5

SHA512
009686dde4d5c948f297ed3cd04d5006ecbfd4546fed23315397966ac1c2b54ec0bde761cdc07e6a2be3e169412b24b5347d0e975b7a0b6250a3d32444c5f211

Download Submit
C:\Users\Admin\AppData\Local\Temp\xmbukjoz.we
Filesize
185KB

MD5
0c09d766c68972dcd4fe187342cbc6db

SHA1
344c9e779a1438a27218475f17a2b31d30261aa0

SHA256
7e1d1860d24188aa79bb14092cfdcd27d1b9f2c20ff62accc4e71c6414999ff6

SHA512
82257a38aced3a4fb0d7a0fa447e666a9b9e5d0bccf0320f8e34e8686289618a95ddd52bdce67a04993f09546bedccca69ad619170bf3eb9302ce4ea671c30eb

Download Submit
memory/2836-142-0x00000000005A0000-0x00000000005B0000-memory.dmp

Filesize
64KB

Download
memory/2836-137-0x0000000000000000-mapping.dmp

Download
memory/2836-140-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2836-141-0x0000000000BD0000-0x0000000000F1A000-memory.dmp

Filesize
3.3MB

Download
memory/2836-139-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2836-145-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3064-150-0x0000000007A20000-0x0000000007AC6000-memory.dmp

Filesize
664KB

Download
memory/3064-143-0x00000000078E0000-0x0000000007A1D000-memory.dmp

Filesize
1.2MB

Download
memory/3064-152-0x0000000007A20000-0x0000000007AC6000-memory.dmp

Filesize
664KB

Download
memory/3804-132-0x0000000000000000-mapping.dmp

Download
memory/3916-144-0x0000000000000000-mapping.dmp

Download
memory/3916-148-0x0000000003260000-0x00000000035AA000-memory.dmp

Filesize
3.3MB

Download
memory/3916-149-0x0000000002FF0000-0x000000000307F000-memory.dmp

Filesize
572KB

Download
memory/3916-147-0x00000000012A0000-0x00000000012CD000-memory.dmp

Filesize
180KB

Download
memory/3916-151-0x00000000012A0000-0x00000000012CD000-memory.dmp

Filesize
180KB

Download
memory/3916-146-0x00000000007B0000-0x00000000007C4000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads