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

2000 taczgytc.exe
960 taczgytc.exe

pid	process
2000	taczgytc.exe
960	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-1-5-21-3385717845-2518323428-350143044-1000\Control Panel\International\Geo\Nation	taczgytc.exe

Loads dropped DLL 3 IoCs

Processes:

vbc.exetaczgytc.execolorcpl.exe

pid process

1108 vbc.exe
2000 taczgytc.exe
636 colorcpl.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
1108	vbc.exe
2000	taczgytc.exe
636	colorcpl.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

taczgytc.exetaczgytc.execolorcpl.exe

description	pid	process	target process
PID 2000 set thread context of 960	2000	taczgytc.exe	taczgytc.exe
PID 960 set thread context of 1268	960	taczgytc.exe	Explorer.EXE
PID 960 set thread context of 1268	960	taczgytc.exe	Explorer.EXE
PID 636 set thread context of 1268	636	colorcpl.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:

colorcpl.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3385717845-2518323428-350143044-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	colorcpl.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

taczgytc.execolorcpl.exe

pid	process
960	taczgytc.exe
960	taczgytc.exe
960	taczgytc.exe
960	taczgytc.exe
960	taczgytc.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
Suspicious behavior: MapViewOfSection 9 IoCs

Processes:

taczgytc.exetaczgytc.execolorcpl.exe

pid process

2000 taczgytc.exe
960 taczgytc.exe
960 taczgytc.exe
960 taczgytc.exe
960 taczgytc.exe
636 colorcpl.exe
636 colorcpl.exe
636 colorcpl.exe
636 colorcpl.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

taczgytc.execolorcpl.exe

description pid process

Token: SeDebugPrivilege 960 taczgytc.exe
Token: SeDebugPrivilege 636 colorcpl.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE

pid	process
1268	Explorer.EXE

pid	process
2000	taczgytc.exe
960	taczgytc.exe
960	taczgytc.exe
960	taczgytc.exe
960	taczgytc.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe
636	colorcpl.exe

description	pid	process
Token: SeDebugPrivilege	960	taczgytc.exe
Token: SeDebugPrivilege	636	colorcpl.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

vbc.exetaczgytc.exetaczgytc.execolorcpl.exe

description	pid	process	target process
PID 1108 wrote to memory of 2000	1108	vbc.exe	taczgytc.exe
PID 1108 wrote to memory of 2000	1108	vbc.exe	taczgytc.exe
PID 1108 wrote to memory of 2000	1108	vbc.exe	taczgytc.exe
PID 1108 wrote to memory of 2000	1108	vbc.exe	taczgytc.exe
PID 2000 wrote to memory of 960	2000	taczgytc.exe	taczgytc.exe
PID 2000 wrote to memory of 960	2000	taczgytc.exe	taczgytc.exe
PID 2000 wrote to memory of 960	2000	taczgytc.exe	taczgytc.exe
PID 2000 wrote to memory of 960	2000	taczgytc.exe	taczgytc.exe
PID 2000 wrote to memory of 960	2000	taczgytc.exe	taczgytc.exe
PID 960 wrote to memory of 636	960	taczgytc.exe	colorcpl.exe
PID 960 wrote to memory of 636	960	taczgytc.exe	colorcpl.exe
PID 960 wrote to memory of 636	960	taczgytc.exe	colorcpl.exe
PID 960 wrote to memory of 636	960	taczgytc.exe	colorcpl.exe
PID 636 wrote to memory of 1996	636	colorcpl.exe	Firefox.exe
PID 636 wrote to memory of 1996	636	colorcpl.exe	Firefox.exe
PID 636 wrote to memory of 1996	636	colorcpl.exe	Firefox.exe
PID 636 wrote to memory of 1996	636	colorcpl.exe	Firefox.exe
PID 636 wrote to memory of 1996	636	colorcpl.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1268

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1108

C:\Users\Admin\AppData\Local\Temp\taczgytc.exe
"C:\Users\Admin\AppData\Local\Temp\taczgytc.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2000

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
- Suspicious use of WriteProcessMemory
PID:960

C:\Windows\SysWOW64\colorcpl.exe
"C:\Windows\SysWOW64\colorcpl.exe"
5⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:636

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
6⤵
PID:1996

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
\Users\Admin\AppData\Local\Temp\sqlite3.dll
Filesize
831KB

MD5
05ace2f6d9bef6fd9bbd05ee5262a1f2

SHA1
5cce2228e0d9c6cc913cf551e0bf7c76ed74ff59

SHA256
002459f4d4758011b4d7f36935f1fe323494b847f8c173a551076a3d30475ebc

SHA512
1e717a66a72eb626727144fa7458f472ada54fd1be37072c9e740945e34ba94025737aef44e54752c50c5b79a583c6a91a0d8043bf1bf7c3e7cab8537207f9fc

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

MD5
3670d0b8a72e51141fe55836d663a1cd

SHA1
29f2446d166679a8462bfc91f92af8e49c6d70d2

SHA256
e9f11c8aef527b467deef587f26f417e33653c1a48962beef3881ba2054ec23b

SHA512
6010e80b94dba3c298e9d528aef2cc4fb199d82f0ec3c5694447c28fe7922977a4c2d72d94a4b401aa5d3bce28026337364d810bc681eb77f8068fc50a6a9fa7

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

MD5
3670d0b8a72e51141fe55836d663a1cd

SHA1
29f2446d166679a8462bfc91f92af8e49c6d70d2

SHA256
e9f11c8aef527b467deef587f26f417e33653c1a48962beef3881ba2054ec23b

SHA512
6010e80b94dba3c298e9d528aef2cc4fb199d82f0ec3c5694447c28fe7922977a4c2d72d94a4b401aa5d3bce28026337364d810bc681eb77f8068fc50a6a9fa7

Download Submit
memory/636-77-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/636-79-0x00000000005E0000-0x000000000066F000-memory.dmp

Filesize
572KB

Download
memory/636-78-0x00000000021B0000-0x00000000024B3000-memory.dmp

Filesize
3.0MB

Download
memory/636-76-0x00000000008E0000-0x00000000008F8000-memory.dmp

Filesize
96KB

Download
memory/636-72-0x0000000000000000-mapping.dmp

Download
memory/636-83-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/960-70-0x00000000001B0000-0x00000000001C0000-memory.dmp

Filesize
64KB

Download
memory/960-63-0x00000000004012B0-mapping.dmp

Download
memory/960-68-0x0000000000160000-0x0000000000170000-memory.dmp

Filesize
64KB

Download
memory/960-67-0x0000000000AA0000-0x0000000000DA3000-memory.dmp

Filesize
3.0MB

Download
memory/960-73-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/960-74-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/960-66-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/960-65-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1108-54-0x00000000767F1000-0x00000000767F3000-memory.dmp

Filesize
8KB

Download
memory/1268-69-0x0000000004910000-0x00000000049DA000-memory.dmp

Filesize
808KB

Download
memory/1268-80-0x0000000005FF0000-0x000000000609B000-memory.dmp

Filesize
684KB

Download
memory/1268-81-0x000007FEF6C90000-0x000007FEF6DD3000-memory.dmp

Filesize
1.3MB

Download
memory/1268-82-0x000007FE9F160000-0x000007FE9F16A000-memory.dmp

Filesize
40KB

Download
memory/1268-71-0x0000000005D70000-0x0000000005E49000-memory.dmp

Filesize
868KB

Download
memory/1268-84-0x0000000005FF0000-0x000000000609B000-memory.dmp

Filesize
684KB

Download
memory/2000-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads