formbook | 3122e46802fdd1d353960c89b9d2679e5c818d5cf027dff747acd0d0c2aea7b6

General

Target

RFQ # PC25-1301.xlsx
Size

1.4MB
MD5

88f068751d671c40053bdf391c237bd5
SHA1

0885f4d1befb6c12afa526769d6c25ae398412ab
SHA256

3122e46802fdd1d353960c89b9d2679e5c818d5cf027dff747acd0d0c2aea7b6
SHA512

4a9d265e88c98ecee75e8ff01904a618a86c5a315a6095899efa1e98e541a97a54c1097da9243a7b5b0fab13d640d356c8b42c8ff8a6fe0a609ee13558c85253
SSDEEP

24576:JutNHbejV7LluSPKUn+Yw7P20aJRhq+0WBSxJ8sUJjlHcs+0ZlX81kt2i1Pe7Kj:UfHbGRPV67ujzBInUvHwB+Iixy2

Score

10^/10

formbook hwu6 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

hwu6

Decoy

lf758.vip

locerin-hair.shop

vytech.net

pet-insurance-intl-7990489.live

thepolithat.buzz

d66dr114gl.bond

suv-deals-49508.bond

job-offer-53922.bond

drstone1.click

lebahsemesta57.click

olmanihousel.shop

piedmontcsb.info

trisula888x.top

66sodovna.net

dental-implants-83810.bond

imxtld.club

frozenpines.net

ffgzgbl.xyz

tlc7z.rest

alexismuller.design

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2828-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2828-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2368-20-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	3060	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
3064	word.exe

Loads dropped DLL 1 IoCs

pid	Process
3060	EQNEDT32.EXE

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0006000000019470-6.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3064 set thread context of 2828	3064	word.exe	32
PID 2828 set thread context of 1344	2828	svchost.exe	21
PID 2828 set thread context of 1344	2828	svchost.exe	21
PID 2368 set thread context of 1344	2368	raserver.exe	21

System Location Discovery: System Language Discovery 1 TTPs 6 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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	raserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	word.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
3060	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2268	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2828	svchost.exe
2828	svchost.exe
2828	svchost.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe
2368	raserver.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
3064	word.exe
2828	svchost.exe
2828	svchost.exe
2828	svchost.exe
2828	svchost.exe
2368	raserver.exe
2368	raserver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2828	svchost.exe
Token: SeDebugPrivilege	2368	raserver.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3064	word.exe
3064	word.exe
1344	Explorer.EXE
1344	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3064	word.exe
3064	word.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 3064	3060	EQNEDT32.EXE	31
PID 3060 wrote to memory of 3064	3060	EQNEDT32.EXE	31
PID 3060 wrote to memory of 3064	3060	EQNEDT32.EXE	31
PID 3060 wrote to memory of 3064	3060	EQNEDT32.EXE	31
PID 3064 wrote to memory of 2828	3064	word.exe	32
PID 3064 wrote to memory of 2828	3064	word.exe	32
PID 3064 wrote to memory of 2828	3064	word.exe	32
PID 3064 wrote to memory of 2828	3064	word.exe	32
PID 3064 wrote to memory of 2828	3064	word.exe	32
PID 2828 wrote to memory of 2368	2828	svchost.exe	33
PID 2828 wrote to memory of 2368	2828	svchost.exe	33
PID 2828 wrote to memory of 2368	2828	svchost.exe	33
PID 2828 wrote to memory of 2368	2828	svchost.exe	33
PID 2368 wrote to memory of 1816	2368	raserver.exe	34
PID 2368 wrote to memory of 1816	2368	raserver.exe	34
PID 2368 wrote to memory of 1816	2368	raserver.exe	34
PID 2368 wrote to memory of 1816	2368	raserver.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
PID:1344
- C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
  "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\RFQ # PC25-1301.xlsx"
  2⤵
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:2268

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Users\Admin\AppData\Roaming\word.exe
  C:\Users\Admin\AppData\Roaming\word.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3064
- - C:\Windows\SysWOW64\svchost.exe
    C:\Users\Admin\AppData\Roaming\word.exe
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2828
  - - C:\Windows\SysWOW64\raserver.exe
      "C:\Windows\SysWOW64\raserver.exe"
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2368
    - - C:\Windows\SysWOW64\cmd.exe
        
        /c del "C:\Windows\SysWOW64\svchost.exe"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1816

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\word.exe

Filesize
1.6MB

MD5
df85a6fea907176063e6dc8ad2888bfb

SHA1
450837ad62e143afee717c52264e21d253bd2a74

SHA256
28818006253d45c3dd643095a63892bf730611b9347b8f3b930be3efffa908d8

SHA512
c25297581c5e420ac0f092b481c8a54454addc461b97171a69c81a0dfbeec632323e9f8b7d73ee4097078c3bef3ce766f9dcb2df6c898e44b64b064850300c58

Download Submit
memory/1344-15-0x0000000003760000-0x0000000003860000-memory.dmp

Filesize
1024KB

Download
memory/1344-18-0x0000000006C00000-0x0000000006CF7000-memory.dmp

Filesize
988KB

Download
memory/1344-21-0x0000000006DE0000-0x0000000006F58000-memory.dmp

Filesize
1.5MB

Download
memory/1344-24-0x0000000006F60000-0x0000000007023000-memory.dmp

Filesize
780KB

Download
memory/2268-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2268-1-0x0000000072C3D000-0x0000000072C48000-memory.dmp

Filesize
44KB

Download
memory/2268-16-0x0000000072C3D000-0x0000000072C48000-memory.dmp

Filesize
44KB

Download
memory/2368-19-0x0000000000470000-0x000000000048C000-memory.dmp

Filesize
112KB

Download
memory/2368-20-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2828-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2828-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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