formbook | e8208b4ea0372e7708d867c4df307677ed6af1d1a10d87f1b2a8e02bd184b71f

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
06-08-2024 00:48

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General

Target

A FINAL DRAFT BL 00595854/A FINAL DRAFT BL 00595854.exe
Size

24KB
MD5

2f8c33ab91e3897522bb6add4b6e1375
SHA1

dd6159fe631838b3bf1bf27bc90ea1acbaf381c4
SHA256

d0f5829a3fe65ff01901b2742e9e19cbb848d5b55452103ab1b8c82e87fa6872
SHA512

da28c79295704dc476ea28c69cfe9108b75be68912c7455d6b6eb6e3df07c6bd6e704f586433d79a3580bfb313cf459b2626d5ce34e3bc85b787b82a83358a3b
SSDEEP

768:+tSqfNFDB5jKxnVbgvqxNdKcSHJK/Y/+hP7:ESq3B5jKxnKvKNdKBHJK/n

Score

10^/10

formbook be28 credential_access discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

be28

Decoy

nsrrsdda.xyz

amut-sakhon-party-539528511.fyi

icholas-paaac.buzz

heirwellnessbuzz.buzz

mhgriu.xyz

etropixel.info

959725nkrowrf140.top

oxicsh.click

iobet-casino1.online

ome-care-81701.bond

lhrristorpky.xyz

ucko.info

ryson-saaab.buzz

aming-monitor-69835.bond

puf7.shop

armageddon.net

58799.top

rainfood.online

ahjong168.vip

arjetas-empresariales-pro.xyz

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2748-0-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2652-4-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\9R0DOPOHNVG = "C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe"	wuapp.exe
Key created	\Registry\User\S-1-5-21-2212144002-1172735686-1556890956-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	wuapp.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2612 set thread context of 2748	2612	A FINAL DRAFT BL 00595854.exe	39
PID 2748 set thread context of 1224	2748	iexplore.exe	21
PID 2652 set thread context of 1224	2652	wuapp.exe	21
PID 2652 set thread context of 2388	2652	wuapp.exe	33

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuapp.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2212144002-1172735686-1556890956-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wuapp.exe

Runs regedit.exe 1 IoCs

pid	Process
2896	regedit.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2748	iexplore.exe
2748	iexplore.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1224	Explorer.EXE

Suspicious behavior: MapViewOfSection 9 IoCs

pid	Process
2748	iexplore.exe
2748	iexplore.exe
2748	iexplore.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe
2652	wuapp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2612	A FINAL DRAFT BL 00595854.exe
Token: SeDebugPrivilege	2748	iexplore.exe
Token: SeDebugPrivilege	2652	wuapp.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1224	Explorer.EXE
1224	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1224	Explorer.EXE
1224	Explorer.EXE

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 2300	2612	A FINAL DRAFT BL 00595854.exe	31
PID 2612 wrote to memory of 2300	2612	A FINAL DRAFT BL 00595854.exe	31
PID 2612 wrote to memory of 2300	2612	A FINAL DRAFT BL 00595854.exe	31
PID 2612 wrote to memory of 2300	2612	A FINAL DRAFT BL 00595854.exe	31
PID 2612 wrote to memory of 2300	2612	A FINAL DRAFT BL 00595854.exe	31
PID 2612 wrote to memory of 2300	2612	A FINAL DRAFT BL 00595854.exe	31
PID 2612 wrote to memory of 2300	2612	A FINAL DRAFT BL 00595854.exe	31
PID 2612 wrote to memory of 2064	2612	A FINAL DRAFT BL 00595854.exe	32
PID 2612 wrote to memory of 2064	2612	A FINAL DRAFT BL 00595854.exe	32
PID 2612 wrote to memory of 2064	2612	A FINAL DRAFT BL 00595854.exe	32
PID 2612 wrote to memory of 2064	2612	A FINAL DRAFT BL 00595854.exe	32
PID 2612 wrote to memory of 2064	2612	A FINAL DRAFT BL 00595854.exe	32
PID 2612 wrote to memory of 2388	2612	A FINAL DRAFT BL 00595854.exe	33
PID 2612 wrote to memory of 2388	2612	A FINAL DRAFT BL 00595854.exe	33
PID 2612 wrote to memory of 2388	2612	A FINAL DRAFT BL 00595854.exe	33
PID 2612 wrote to memory of 2388	2612	A FINAL DRAFT BL 00595854.exe	33
PID 2612 wrote to memory of 2388	2612	A FINAL DRAFT BL 00595854.exe	33
PID 2612 wrote to memory of 2212	2612	A FINAL DRAFT BL 00595854.exe	34
PID 2612 wrote to memory of 2212	2612	A FINAL DRAFT BL 00595854.exe	34
PID 2612 wrote to memory of 2212	2612	A FINAL DRAFT BL 00595854.exe	34
PID 2612 wrote to memory of 2212	2612	A FINAL DRAFT BL 00595854.exe	34
PID 2612 wrote to memory of 2212	2612	A FINAL DRAFT BL 00595854.exe	34
PID 2612 wrote to memory of 2212	2612	A FINAL DRAFT BL 00595854.exe	34
PID 2612 wrote to memory of 2212	2612	A FINAL DRAFT BL 00595854.exe	34
PID 2612 wrote to memory of 2896	2612	A FINAL DRAFT BL 00595854.exe	35
PID 2612 wrote to memory of 2896	2612	A FINAL DRAFT BL 00595854.exe	35
PID 2612 wrote to memory of 2896	2612	A FINAL DRAFT BL 00595854.exe	35
PID 2612 wrote to memory of 2896	2612	A FINAL DRAFT BL 00595854.exe	35
PID 2612 wrote to memory of 2896	2612	A FINAL DRAFT BL 00595854.exe	35
PID 2612 wrote to memory of 2908	2612	A FINAL DRAFT BL 00595854.exe	36
PID 2612 wrote to memory of 2908	2612	A FINAL DRAFT BL 00595854.exe	36
PID 2612 wrote to memory of 2908	2612	A FINAL DRAFT BL 00595854.exe	36
PID 2612 wrote to memory of 2908	2612	A FINAL DRAFT BL 00595854.exe	36
PID 2612 wrote to memory of 2908	2612	A FINAL DRAFT BL 00595854.exe	36
PID 2612 wrote to memory of 2908	2612	A FINAL DRAFT BL 00595854.exe	36
PID 2612 wrote to memory of 2908	2612	A FINAL DRAFT BL 00595854.exe	36
PID 2612 wrote to memory of 2944	2612	A FINAL DRAFT BL 00595854.exe	37
PID 2612 wrote to memory of 2944	2612	A FINAL DRAFT BL 00595854.exe	37
PID 2612 wrote to memory of 2944	2612	A FINAL DRAFT BL 00595854.exe	37
PID 2612 wrote to memory of 2944	2612	A FINAL DRAFT BL 00595854.exe	37
PID 2612 wrote to memory of 2944	2612	A FINAL DRAFT BL 00595854.exe	37
PID 2612 wrote to memory of 2764	2612	A FINAL DRAFT BL 00595854.exe	38
PID 2612 wrote to memory of 2764	2612	A FINAL DRAFT BL 00595854.exe	38
PID 2612 wrote to memory of 2764	2612	A FINAL DRAFT BL 00595854.exe	38
PID 2612 wrote to memory of 2764	2612	A FINAL DRAFT BL 00595854.exe	38
PID 2612 wrote to memory of 2764	2612	A FINAL DRAFT BL 00595854.exe	38
PID 2612 wrote to memory of 2764	2612	A FINAL DRAFT BL 00595854.exe	38
PID 2612 wrote to memory of 2764	2612	A FINAL DRAFT BL 00595854.exe	38
PID 2612 wrote to memory of 2748	2612	A FINAL DRAFT BL 00595854.exe	39
PID 2612 wrote to memory of 2748	2612	A FINAL DRAFT BL 00595854.exe	39
PID 2612 wrote to memory of 2748	2612	A FINAL DRAFT BL 00595854.exe	39
PID 2612 wrote to memory of 2748	2612	A FINAL DRAFT BL 00595854.exe	39
PID 2612 wrote to memory of 2748	2612	A FINAL DRAFT BL 00595854.exe	39
PID 2612 wrote to memory of 2748	2612	A FINAL DRAFT BL 00595854.exe	39
PID 2612 wrote to memory of 2748	2612	A FINAL DRAFT BL 00595854.exe	39
PID 1224 wrote to memory of 2652	1224	Explorer.EXE	40
PID 1224 wrote to memory of 2652	1224	Explorer.EXE	40
PID 1224 wrote to memory of 2652	1224	Explorer.EXE	40
PID 1224 wrote to memory of 2652	1224	Explorer.EXE	40
PID 1224 wrote to memory of 2652	1224	Explorer.EXE	40
PID 1224 wrote to memory of 2652	1224	Explorer.EXE	40
PID 1224 wrote to memory of 2652	1224	Explorer.EXE	40
PID 2652 wrote to memory of 2688	2652	wuapp.exe	41
PID 2652 wrote to memory of 2688	2652	wuapp.exe	41

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Users\Admin\AppData\Local\Temp\A FINAL DRAFT BL 00595854\A FINAL DRAFT BL 00595854.exe
  "C:\Users\Admin\AppData\Local\Temp\A FINAL DRAFT BL 00595854\A FINAL DRAFT BL 00595854.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2612
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
    3⤵
    PID:2300
- - C:\Windows\System32\svchost.exe
    "C:\Windows\System32\svchost.exe"
    3⤵
    PID:2064
- - C:\Windows\System32\notepad.exe
    "C:\Windows\System32\notepad.exe"
    3⤵
    PID:2388
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
    3⤵
    PID:2212
- - C:\Windows\regedit.exe
    "C:\Windows\regedit.exe"
    3⤵
    - Runs regedit.exe
    PID:2896
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
    3⤵
    PID:2908
- - C:\Windows\System32\calc.exe
    "C:\Windows\System32\calc.exe"
    3⤵
    PID:2944
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
    3⤵
    PID:2764
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2748
- C:\Windows\SysWOW64\wuapp.exe
  "C:\Windows\SysWOW64\wuapp.exe"
  2⤵
  - Adds policy Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2652
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\K4-7SD8B\K4-logim.jpeg

Filesize
70KB

MD5
f43b60bff77d9408e06d19733681c847

SHA1
bf143e89b63c24e7ceaf50a925036285d431ecdf

SHA256
c336ed708c0a961977588590a3c26398565fa30a4e91dbcd463dd3520387f64f

SHA512
043bbd2f235165df05aa23a534661b31d91cf5f61a0751fe0604e0ae19a195aeeccc8fe663d306c5c6f882db79151cf3a0d33d7039cbe6ab80350222e97b2841

Download Submit
C:\Users\Admin\AppData\Roaming\K4-7SD8B\K4-logrf.ini

Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\K4-7SD8B\K4-logri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\K4-7SD8B\K4-logrv.ini

Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/1224-14-0x0000000004E10000-0x0000000004F58000-memory.dmp

Filesize
1.3MB

Download
memory/1224-10-0x0000000004C80000-0x0000000004D90000-memory.dmp

Filesize
1.1MB

Download
memory/1224-15-0x0000000004E10000-0x0000000004F58000-memory.dmp

Filesize
1.3MB

Download
memory/1224-1-0x0000000004C80000-0x0000000004D90000-memory.dmp

Filesize
1.1MB

Download
memory/1224-22-0x0000000004E10000-0x0000000004F58000-memory.dmp

Filesize
1.3MB

Download
memory/2652-4-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/2652-3-0x0000000000B90000-0x0000000000B9B000-memory.dmp

Filesize
44KB

Download
memory/2652-2-0x0000000000B90000-0x0000000000B9B000-memory.dmp

Filesize
44KB

Download
memory/2748-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download