formbook | efc51781bc3e82733e68f330ce4905d57bd3188a3584faa693a18223f17ec7ff

Analysis

max time kernel
152s
max time network
155s
platform
windows7_x64
resource
win7-20220414-en
submitted
07/07/2022, 13:10

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General

Target
Confirmation.exe
Size 298KB
Sample220707-qectzaaee3
SHA256 efc51781bc3e82733e68f330ce4905d57bd3188a3584faa693a18223f17ec7ff
MD5 85ae6c8906bf4281e8fc15c7b7c25d93
SHA1 96b71756403f76ec7d1e91d0e692221a7a044383
SHA512 5c6cfb9ba2a664aede4c1e0eb0faae88a85015c7333341ed638c7cb38475750f8937bf2dae1a7badefff4ae76d7f4550c2a845e03cc0376a336fea6492e7f4b0
MD5 SHA1 SHA512

Score

10^/10

formbook persistence spyware stealer suricata trojan

Malware Config

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Loads dropped DLL 1 IoCs

pid	Process
1952	cmmon32.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\XPEP5XQ87V = "C:\\Program Files (x86)\\Njvxpnpxh\\mfcmrkpnj28.exe"	cmmon32.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1120 set thread context of 2016	1120	Confirmation.exe	28
PID 2016 set thread context of 1396	2016	cvtres.exe	12
PID 1952 set thread context of 1396	1952	cmmon32.exe	12

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Njvxpnpxh\mfcmrkpnj28.exe	cmmon32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-790309383-526510583-3802439154-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
1120	Confirmation.exe
2016	cvtres.exe
2016	cvtres.exe
2016	cvtres.exe
2016	cvtres.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2016	cvtres.exe
2016	cvtres.exe
2016	cvtres.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe
1952	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1120	Confirmation.exe
Token: SeDebugPrivilege	2016	cvtres.exe
Token: SeDebugPrivilege	1952	cmmon32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1396	Explorer.EXE
1396	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1396	Explorer.EXE
1396	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 1272	1120	Confirmation.exe	27
PID 1120 wrote to memory of 1272	1120	Confirmation.exe	27
PID 1120 wrote to memory of 1272	1120	Confirmation.exe	27
PID 1120 wrote to memory of 1272	1120	Confirmation.exe	27
PID 1120 wrote to memory of 2016	1120	Confirmation.exe	28
PID 1120 wrote to memory of 2016	1120	Confirmation.exe	28
PID 1120 wrote to memory of 2016	1120	Confirmation.exe	28
PID 1120 wrote to memory of 2016	1120	Confirmation.exe	28
PID 1120 wrote to memory of 2016	1120	Confirmation.exe	28
PID 1120 wrote to memory of 2016	1120	Confirmation.exe	28
PID 1120 wrote to memory of 2016	1120	Confirmation.exe	28
PID 1396 wrote to memory of 1952	1396	Explorer.EXE	30
PID 1396 wrote to memory of 1952	1396	Explorer.EXE	30
PID 1396 wrote to memory of 1952	1396	Explorer.EXE	30
PID 1396 wrote to memory of 1952	1396	Explorer.EXE	30
PID 1952 wrote to memory of 1496	1952	cmmon32.exe	31
PID 1952 wrote to memory of 1496	1952	cmmon32.exe	31
PID 1952 wrote to memory of 1496	1952	cmmon32.exe	31
PID 1952 wrote to memory of 1496	1952	cmmon32.exe	31
PID 1952 wrote to memory of 568	1952	cmmon32.exe	34
PID 1952 wrote to memory of 568	1952	cmmon32.exe	34
PID 1952 wrote to memory of 568	1952	cmmon32.exe	34
PID 1952 wrote to memory of 568	1952	cmmon32.exe	34
PID 1952 wrote to memory of 568	1952	cmmon32.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Users\Admin\AppData\Local\Temp\Confirmation.exe
  "C:\Users\Admin\AppData\Local\Temp\Confirmation.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1120
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
    3⤵
    PID:1272
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2016
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:828
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.exe"
  2⤵
  - Loads dropped DLL
  - 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:1952
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
    3⤵
    PID:1496
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:568

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

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Downloads

sqlite3.dll

Path \Users\Admin\AppData\Local\Temp\sqlite3.dll
Size 643KB
SHA256 47c56ce3faa60fbba19930f9ee6e1361edd89e38dd56f63a131703b388aa06f6
MD5 f933bf1c010e318dcae54f10beae4600
SHA1 926a0bdc727af62340129e8fa55af502275e937f
SHA512 b1f793a4f7501a670b8ca59da893049494f6fee40ade5d445242d29429610ea16a6269aea56a27c44e53cf93c138f5cd848dea2d5b3341ff4661fbf6492ed8b8
SSDEEP 12288:hZzgeXqFz4zSUtlptnIBhftetS9N5fzPFhqAAPjkK22qwsx:hZm4zSmntn+ftRN5fzWAAPj+wsx
MD5 SHA1 SHA512 SSDEEP

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memory/1120-55-0x0000000000470000-0x00000000004A6000-memory.dmp

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memory/1120-54-0x0000000000AE0000-0x0000000000B2C000-memory.dmp

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memory/1396-65-0x0000000004CE0000-0x0000000004DD2000-memory.dmp

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memory/1396-76-0x0000000006BC0000-0x0000000006D0B000-memory.dmp

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memory/1396-73-0x0000000004CE0000-0x0000000004DD2000-memory.dmp

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memory/1396-72-0x0000000006BC0000-0x0000000006D0B000-memory.dmp

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memory/1952-71-0x0000000000450000-0x00000000004E0000-memory.dmp

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memory/1952-74-0x00000000000C0000-0x00000000000ED000-memory.dmp

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memory/1952-75-0x00000000759E1000-0x00000000759E3000-memory.dmp

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memory/1952-69-0x00000000000C0000-0x00000000000ED000-memory.dmp

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memory/1952-68-0x00000000003B0000-0x00000000003BD000-memory.dmp

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memory/1952-70-0x0000000001F80000-0x0000000002283000-memory.dmp

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memory/2016-62-0x0000000000400000-0x000000000042D000-memory.dmp

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memory/2016-59-0x0000000000400000-0x000000000042D000-memory.dmp

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memory/2016-64-0x00000000001D0000-0x00000000001E1000-memory.dmp

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memory/2016-63-0x0000000000950000-0x0000000000C53000-memory.dmp

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memory/2016-57-0x0000000000400000-0x000000000042D000-memory.dmp

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memory/2016-56-0x0000000000400000-0x000000000042D000-memory.dmp

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