formbook | 56122070a3bdb1f168cbae330d58b9c268700509420d2670ccafd01221b45751

Analysis

max time kernel
151s
max time network
158s
platform
windows7_x64
resource
win7-20220715-en
resource tags

arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
submitted
25-07-2022 05:57

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General

Target

files/14.exe
Size

632KB
MD5

cf123d2f8c6cf7a88472483607163eb5
SHA1

7f15a558d3d63d689d754d3cea804b9ebb79c50b
SHA256

f11ce5b6edfa6ee04b2334cb820f03fd99df64185daf857f4a241653ef2f1a64
SHA512

9b9bb092d139447df86a8286dae1907f56e624e0324ec693e9f91c1b0f2e25041e3187fe44ae618b6cdf35715373ff05b5825d416fb9d858bf265b44cb26ed6d

Score

10^/10

formbook di persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

3.8

Campaign

Decoy

baoxiaofan.com

bestwaycartage.com

sag-architecture.com

salamcanteen.com

clinicalpsychologistkerala.com

mttv222.com

theweproject.com

fybbracelets.net

vv666h.com

bangfupin.com

arkprojetos.com

realgoaldigger.com

pilotedphotography.com

6zonxm55.biz

gaoduanmi.com

aminahmad.com

bountymarketing.net

christopher-rennebach.com

02xjys.faith

estilomiau.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 5 IoCs

rat

resource	yara_rule
behavioral11/memory/896-58-0x0000000000000000-mapping.dmp	formbook
behavioral11/memory/896-60-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral11/memory/896-61-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral11/memory/1344-68-0x00000000000C0000-0x00000000000EA000-memory.dmp	formbook
behavioral11/memory/1344-73-0x00000000000C0000-0x00000000000EA000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
1260	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	cmmon32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HZ-DPL3P_2 = "C:\\Program Files (x86)\\Myznhgbd\\audiodger48dxnh.exe"	cmmon32.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 896 set thread context of 1212	896	14.exe	15
PID 1344 set thread context of 1212	1344	cmmon32.exe	15

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Myznhgbd\audiodger48dxnh.exe	cmmon32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-335065374-4263250628-1829373619-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
896	14.exe
896	14.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe
1344	cmmon32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
896	14.exe
896	14.exe
896	14.exe
1344	cmmon32.exe
1344	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	896	14.exe
Token: SeDebugPrivilege	1344	cmmon32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1212	Explorer.EXE
1212	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1212	Explorer.EXE
1212	Explorer.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
944	14.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 944 wrote to memory of 896	944	14.exe	27
PID 1212 wrote to memory of 1344	1212	Explorer.EXE	29
PID 1212 wrote to memory of 1344	1212	Explorer.EXE	29
PID 1212 wrote to memory of 1344	1212	Explorer.EXE	29
PID 1212 wrote to memory of 1344	1212	Explorer.EXE	29
PID 1344 wrote to memory of 1260	1344	cmmon32.exe	30
PID 1344 wrote to memory of 1260	1344	cmmon32.exe	30
PID 1344 wrote to memory of 1260	1344	cmmon32.exe	30
PID 1344 wrote to memory of 1260	1344	cmmon32.exe	30

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Users\Admin\AppData\Local\Temp\files\14.exe
  "C:\Users\Admin\AppData\Local\Temp\files\14.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:944
- - C:\Users\Admin\AppData\Local\Temp\files\14.exe
    "C:\Users\Admin\AppData\Local\Temp\files\14.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:896
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:1392
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.exe"
  2⤵
  - Adds 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:1344
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\files\14.exe"
    3⤵
    - Deletes itself
    PID:1260

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\8KR3TD9E\8KRlogim.jpeg

Filesize
60KB

MD5
608808024ed25ddc11b487e65d894f7e

SHA1
d5e3b90040f8590424211a4ae54dbe26eca1815f

SHA256
6ecf8d5e99ce0e6689e27ca1880c223dde0f79ae5c7a9e43ba9545c9c3a10c2f

SHA512
64fb9a53da7257366fbd004798cd00615605b64050a2d571008f5d9ea1c411f237c8457ad540a296094f8c78d5e1178bdf419c4320bcb31839ccff887a26c6f7

Download Submit
C:\Users\Admin\AppData\Roaming\8KR3TD9E\8KRlogri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\8KR3TD9E\8KRlogrv.ini

Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/896-60-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/896-61-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/896-62-0x0000000000880000-0x0000000000B83000-memory.dmp

Filesize
3.0MB

Download
memory/896-63-0x00000000002C0000-0x00000000002D4000-memory.dmp

Filesize
80KB

Download
memory/944-56-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/944-57-0x0000000075241000-0x0000000075243000-memory.dmp

Filesize
8KB

Download
memory/944-59-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1212-71-0x0000000003F80000-0x000000000408D000-memory.dmp

Filesize
1.1MB

Download
memory/1212-72-0x0000000004BE0000-0x0000000004D84000-memory.dmp

Filesize
1.6MB

Download
memory/1212-74-0x0000000003F80000-0x000000000408D000-memory.dmp

Filesize
1.1MB

Download
memory/1212-64-0x0000000004BE0000-0x0000000004D84000-memory.dmp

Filesize
1.6MB

Download
memory/1344-68-0x00000000000C0000-0x00000000000EA000-memory.dmp

Filesize
168KB

Download
memory/1344-69-0x00000000020A0000-0x00000000023A3000-memory.dmp

Filesize
3.0MB

Download
memory/1344-70-0x0000000001DD0000-0x0000000001E63000-memory.dmp

Filesize
588KB

Download
memory/1344-67-0x0000000000580000-0x000000000058D000-memory.dmp

Filesize
52KB

Download
memory/1344-73-0x00000000000C0000-0x00000000000EA000-memory.dmp

Filesize
168KB

Download