formbook | d3b626acf50c671d6bb5baff02df9f99d09b761c9deff6932d0600cbabb27d49

General

Target

vbc.exe
Size

374KB
MD5

7106216b183ca11deba630ff975a53b4
SHA1

6c2c163ffd926ea1f7bd6a8e8169957ee8c47dc3
SHA256

d3b626acf50c671d6bb5baff02df9f99d09b761c9deff6932d0600cbabb27d49
SHA512

6204f56205f38f30f1444f4981a0afb7cc74164aaf8744df2d4324b3c32dbcebb6070299a03927139c74bc078f3970cbd75e3fed27659983dcf51762450bc75a
SSDEEP

6144:MEa0Nv9Es7Gavr2RBjyN0fsi6/bFCEy74GhPun6I2aVjLbIozLgl6mJBkghG7PRS:XNGazUyN0ki6/bF21hm68jLbhg6mJBpn

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:

taczgytc.exetaczgytc.exe

pid process

4652 taczgytc.exe
4644 taczgytc.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:

taczgytc.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation taczgytc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
4652	taczgytc.exe
4644	taczgytc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	taczgytc.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

taczgytc.exetaczgytc.execmmon32.exe

description	pid	process	target process
PID 4652 set thread context of 4644	4652	taczgytc.exe	taczgytc.exe
PID 4644 set thread context of 3052	4644	taczgytc.exe	Explorer.EXE
PID 4592 set thread context of 3052	4592	cmmon32.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:

cmmon32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

taczgytc.execmmon32.exe

pid	process
4644	taczgytc.exe
4644	taczgytc.exe
4644	taczgytc.exe
4644	taczgytc.exe
4644	taczgytc.exe
4644	taczgytc.exe
4644	taczgytc.exe
4644	taczgytc.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3052 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

taczgytc.exetaczgytc.execmmon32.exe

pid process

4652 taczgytc.exe
4644 taczgytc.exe
4644 taczgytc.exe
4644 taczgytc.exe
4592 cmmon32.exe
4592 cmmon32.exe
4592 cmmon32.exe
4592 cmmon32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

taczgytc.execmmon32.exe

description pid process

Token: SeDebugPrivilege 4644 taczgytc.exe
Token: SeDebugPrivilege 4592 cmmon32.exe

pid	process
3052	Explorer.EXE

pid	process
4652	taczgytc.exe
4644	taczgytc.exe
4644	taczgytc.exe
4644	taczgytc.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe
4592	cmmon32.exe

description	pid	process
Token: SeDebugPrivilege	4644	taczgytc.exe
Token: SeDebugPrivilege	4592	cmmon32.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

vbc.exetaczgytc.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 1096 wrote to memory of 4652	1096	vbc.exe	taczgytc.exe
PID 1096 wrote to memory of 4652	1096	vbc.exe	taczgytc.exe
PID 1096 wrote to memory of 4652	1096	vbc.exe	taczgytc.exe
PID 4652 wrote to memory of 4644	4652	taczgytc.exe	taczgytc.exe
PID 4652 wrote to memory of 4644	4652	taczgytc.exe	taczgytc.exe
PID 4652 wrote to memory of 4644	4652	taczgytc.exe	taczgytc.exe
PID 4652 wrote to memory of 4644	4652	taczgytc.exe	taczgytc.exe
PID 3052 wrote to memory of 4592	3052	Explorer.EXE	cmmon32.exe
PID 3052 wrote to memory of 4592	3052	Explorer.EXE	cmmon32.exe
PID 3052 wrote to memory of 4592	3052	Explorer.EXE	cmmon32.exe
PID 4592 wrote to memory of 1804	4592	cmmon32.exe	Firefox.exe
PID 4592 wrote to memory of 1804	4592	cmmon32.exe	Firefox.exe
PID 4592 wrote to memory of 1804	4592	cmmon32.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3052

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1096

C:\Users\Admin\AppData\Local\Temp\taczgytc.exe
"C:\Users\Admin\AppData\Local\Temp\taczgytc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4652

C:\Users\Admin\AppData\Local\Temp\taczgytc.exe
"C:\Users\Admin\AppData\Local\Temp\taczgytc.exe"
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4644

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.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:4592

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1804

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\mzndobgjz.bo
Filesize
185KB

MD5
0d1d9c7fd6822452454a7c267358a987

SHA1
36e819ed24bd5ade049f02ccaf8445926ac570d6

SHA256
081e553634e1e687b29f7a74efed313c167da5483298afe4d306a9dec53383a0

SHA512
ae48ce96f9c66c706b19296af75060da88c22a73fd1b5f9545ad11f53c44f1b8d86411052635dd3971c7f5a741a5d9d1d603dbb4431da113cdd384a98d94d2de

Download Submit
C:\Users\Admin\AppData\Local\Temp\qudpusdsw.tdv
Filesize
5KB

MD5
0e2b0c956d02ffa7be574c3e7226dc2d

SHA1
6c30eee43b324e421e2e6e24ac666a59120aa682

SHA256
f489627db6a48adb35927371e9a6105bc852f7b4dc257876c052bec083c09666

SHA512
6587c2466b452b486c4a1de01aa0c516c6c18faee460edddda7e520dcca549a70b5cde6a4eb5c5d535583f05e96b924ef8efd99c8806bcd20286b881154781bd

Download Submit
C:\Users\Admin\AppData\Local\Temp\taczgytc.exe
Filesize
343KB

MD5
3670d0b8a72e51141fe55836d663a1cd

SHA1
29f2446d166679a8462bfc91f92af8e49c6d70d2

SHA256
e9f11c8aef527b467deef587f26f417e33653c1a48962beef3881ba2054ec23b

SHA512
6010e80b94dba3c298e9d528aef2cc4fb199d82f0ec3c5694447c28fe7922977a4c2d72d94a4b401aa5d3bce28026337364d810bc681eb77f8068fc50a6a9fa7

Download Submit
C:\Users\Admin\AppData\Local\Temp\taczgytc.exe
Filesize
343KB

MD5
3670d0b8a72e51141fe55836d663a1cd

SHA1
29f2446d166679a8462bfc91f92af8e49c6d70d2

SHA256
e9f11c8aef527b467deef587f26f417e33653c1a48962beef3881ba2054ec23b

SHA512
6010e80b94dba3c298e9d528aef2cc4fb199d82f0ec3c5694447c28fe7922977a4c2d72d94a4b401aa5d3bce28026337364d810bc681eb77f8068fc50a6a9fa7

Download Submit
C:\Users\Admin\AppData\Local\Temp\taczgytc.exe
Filesize
343KB

MD5
3670d0b8a72e51141fe55836d663a1cd

SHA1
29f2446d166679a8462bfc91f92af8e49c6d70d2

SHA256
e9f11c8aef527b467deef587f26f417e33653c1a48962beef3881ba2054ec23b

SHA512
6010e80b94dba3c298e9d528aef2cc4fb199d82f0ec3c5694447c28fe7922977a4c2d72d94a4b401aa5d3bce28026337364d810bc681eb77f8068fc50a6a9fa7

Download Submit
memory/3052-143-0x0000000007EF0000-0x0000000008016000-memory.dmp

Filesize
1.1MB

Download
memory/3052-154-0x0000000008020000-0x000000000816C000-memory.dmp

Filesize
1.3MB

Download
memory/3052-152-0x0000000008020000-0x000000000816C000-memory.dmp

Filesize
1.3MB

Download
memory/3052-150-0x0000000007EF0000-0x0000000008016000-memory.dmp

Filesize
1.1MB

Download
memory/4592-147-0x0000000000F30000-0x0000000000F3C000-memory.dmp

Filesize
48KB

Download
memory/4592-148-0x0000000000A00000-0x0000000000A2D000-memory.dmp

Filesize
180KB

Download
memory/4592-153-0x0000000000A00000-0x0000000000A2D000-memory.dmp

Filesize
180KB

Download
memory/4592-144-0x0000000000000000-mapping.dmp

Download
memory/4592-151-0x0000000002720000-0x00000000027AF000-memory.dmp

Filesize
572KB

Download
memory/4592-149-0x0000000002970000-0x0000000002CBA000-memory.dmp

Filesize
3.3MB

Download
memory/4644-145-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4644-146-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4644-140-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4644-139-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4644-141-0x0000000001700000-0x0000000001A4A000-memory.dmp

Filesize
3.3MB

Download
memory/4644-142-0x0000000001150000-0x0000000001160000-memory.dmp

Filesize
64KB

Download
memory/4644-137-0x0000000000000000-mapping.dmp

Download
memory/4652-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads