formbook | dd2338c1c8e798e8428bbd62513e3ca5aafb8d238a01e67e32330c7e383f2c1f

General

Target

IMG_5391.EXE
Size

985KB
MD5

7d89ba5fdb75f333becfd437de73f6d4
SHA1

5c7c02592bfae2711c7f82647e426e06a8bc453d
SHA256

dd2338c1c8e798e8428bbd62513e3ca5aafb8d238a01e67e32330c7e383f2c1f
SHA512

c613e89d6e5015448e3db9be5162d345a7d01ecd9d86a2385787695d31a2619ea171091aae06ab199450bd22ddfb910a6158e36eaa87821c79c1c01ba8a45404

Score

10^/10

formbook persistence ransomware rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.unitedfootballcamps.com/bf3/

Decoy

ecatcom.com

what3emoji.com

primbathandbody.com

yt-itclub.com

newbieeer.com

getyoursofa.com

mexicanitems.info

catalogcardgames.net

leagueofwomengolfers.com

gvanmp.com

midnightsunhi.com

cnluma.com

sunsetcherrydesigns.com

cosmoproturkey.com

inifinityapps.net

making50masks.com

battalionice.com

uk-calculation.net

frosteatlove.com

bs-mag.com

Signatures

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

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3980-27-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/3980-28-0x000000000041EBE0-mapping.dmp	formbook
behavioral2/memory/3592-38-0x0000000000D90000-0x0000000000DBE000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

Processes:

nsou.exeAddInProcess32.exe

pid process

1352 nsou.exe
3980 AddInProcess32.exe

pid	process
1352	nsou.exe
3980	AddInProcess32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\naets = "C:\\Users\\Admin\\AppData\\Roaming\\nsou.exe"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082

Suspicious use of SetThreadContext 3 IoCs

Processes:

nsou.exeAddInProcess32.exeexplorer.exe

description	pid	process	target process
PID 1352 set thread context of 3980	1352	nsou.exe	AddInProcess32.exe
PID 3980 set thread context of 3040	3980	AddInProcess32.exe	Explorer.EXE
PID 3592 set thread context of 3040	3592	explorer.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 71 IoCs

Processes:

IMG_5391.EXEnsou.exeAddInProcess32.exeexplorer.exe

pid	process
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
640	IMG_5391.EXE
1352	nsou.exe
1352	nsou.exe
3980	AddInProcess32.exe
3980	AddInProcess32.exe
3980	AddInProcess32.exe
3980	AddInProcess32.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe
3592	explorer.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

AddInProcess32.exeexplorer.exe

pid process

3980 AddInProcess32.exe
3980 AddInProcess32.exe
3980 AddInProcess32.exe
3592 explorer.exe
3592 explorer.exe

pid	process
3980	AddInProcess32.exe
3980	AddInProcess32.exe
3980	AddInProcess32.exe
3592	explorer.exe
3592	explorer.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

IMG_5391.EXEnsou.exeAddInProcess32.exeexplorer.exe

description	pid	process
Token: SeDebugPrivilege	640	IMG_5391.EXE
Token: SeDebugPrivilege	1352	nsou.exe
Token: SeDebugPrivilege	3980	AddInProcess32.exe
Token: SeDebugPrivilege	3592	explorer.exe

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

3040 Explorer.EXE

pid	process
3040	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

IMG_5391.EXEcmd.exensou.exeExplorer.EXEexplorer.exe

description	pid	process	target process
PID 640 wrote to memory of 2948	640	IMG_5391.EXE	cmd.exe
PID 640 wrote to memory of 2948	640	IMG_5391.EXE	cmd.exe
PID 640 wrote to memory of 2948	640	IMG_5391.EXE	cmd.exe
PID 2948 wrote to memory of 4068	2948	cmd.exe	reg.exe
PID 2948 wrote to memory of 4068	2948	cmd.exe	reg.exe
PID 2948 wrote to memory of 4068	2948	cmd.exe	reg.exe
PID 640 wrote to memory of 1352	640	IMG_5391.EXE	nsou.exe
PID 640 wrote to memory of 1352	640	IMG_5391.EXE	nsou.exe
PID 640 wrote to memory of 1352	640	IMG_5391.EXE	nsou.exe
PID 1352 wrote to memory of 3980	1352	nsou.exe	AddInProcess32.exe
PID 1352 wrote to memory of 3980	1352	nsou.exe	AddInProcess32.exe
PID 1352 wrote to memory of 3980	1352	nsou.exe	AddInProcess32.exe
PID 1352 wrote to memory of 3980	1352	nsou.exe	AddInProcess32.exe
PID 1352 wrote to memory of 3980	1352	nsou.exe	AddInProcess32.exe
PID 1352 wrote to memory of 3980	1352	nsou.exe	AddInProcess32.exe
PID 3040 wrote to memory of 3592	3040	Explorer.EXE	explorer.exe
PID 3040 wrote to memory of 3592	3040	Explorer.EXE	explorer.exe
PID 3040 wrote to memory of 3592	3040	Explorer.EXE	explorer.exe
PID 3592 wrote to memory of 1948	3592	explorer.exe	cmd.exe
PID 3592 wrote to memory of 1948	3592	explorer.exe	cmd.exe
PID 3592 wrote to memory of 1948	3592	explorer.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3040

C:\Users\Admin\AppData\Local\Temp\IMG_5391.EXE
"C:\Users\Admin\AppData\Local\Temp\IMG_5391.EXE"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:640

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "naets" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\nsou.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:2948

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "naets" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\nsou.exe"
4⤵
- Adds Run key to start application
PID:4068

C:\Users\Admin\AppData\Roaming\nsou.exe
"C:\Users\Admin\AppData\Roaming\nsou.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1352

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
"C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3980

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3592

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
3⤵
PID:1948

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
C:\Users\Admin\AppData\Roaming\nsou.exe
MD5
7d89ba5fdb75f333becfd437de73f6d4

SHA1
5c7c02592bfae2711c7f82647e426e06a8bc453d

SHA256
dd2338c1c8e798e8428bbd62513e3ca5aafb8d238a01e67e32330c7e383f2c1f

SHA512
c613e89d6e5015448e3db9be5162d345a7d01ecd9d86a2385787695d31a2619ea171091aae06ab199450bd22ddfb910a6158e36eaa87821c79c1c01ba8a45404

Download Submit
C:\Users\Admin\AppData\Roaming\nsou.exe
MD5
7d89ba5fdb75f333becfd437de73f6d4

SHA1
5c7c02592bfae2711c7f82647e426e06a8bc453d

SHA256
dd2338c1c8e798e8428bbd62513e3ca5aafb8d238a01e67e32330c7e383f2c1f

SHA512
c613e89d6e5015448e3db9be5162d345a7d01ecd9d86a2385787695d31a2619ea171091aae06ab199450bd22ddfb910a6158e36eaa87821c79c1c01ba8a45404

Download Submit
memory/640-3-0x0000000000970000-0x0000000000971000-memory.dmp

Filesize
4KB

Download
memory/640-5-0x00000000053B0000-0x00000000053B1000-memory.dmp

Filesize
4KB

Download
memory/640-6-0x0000000005350000-0x0000000005351000-memory.dmp

Filesize
4KB

Download
memory/640-7-0x0000000005310000-0x000000000532E000-memory.dmp

Filesize
120KB

Download
memory/640-8-0x0000000002C80000-0x0000000002C81000-memory.dmp

Filesize
4KB

Download
memory/640-9-0x0000000007DA0000-0x0000000007DA1000-memory.dmp

Filesize
4KB

Download
memory/640-2-0x0000000073190000-0x000000007387E000-memory.dmp

Filesize
6.9MB

Download
memory/640-12-0x0000000005351000-0x0000000005352000-memory.dmp

Filesize
4KB

Download
memory/1352-13-0x0000000000000000-mapping.dmp

Download
memory/1352-16-0x0000000073190000-0x000000007387E000-memory.dmp

Filesize
6.9MB

Download
memory/1352-23-0x0000000004930000-0x0000000004931000-memory.dmp

Filesize
4KB

Download
memory/1352-24-0x0000000007D70000-0x0000000007D7B000-memory.dmp

Filesize
44KB

Download
memory/1352-25-0x0000000002200000-0x0000000002201000-memory.dmp

Filesize
4KB

Download
memory/1352-26-0x0000000004931000-0x0000000004932000-memory.dmp

Filesize
4KB

Download
memory/1948-36-0x0000000000000000-mapping.dmp

Download
memory/2948-10-0x0000000000000000-mapping.dmp

Download
memory/3040-33-0x0000000006780000-0x00000000068C9000-memory.dmp

Filesize
1.3MB

Download
memory/3040-41-0x0000000006D90000-0x0000000006EAF000-memory.dmp

Filesize
1.1MB

Download
memory/3592-34-0x0000000000000000-mapping.dmp

Download
memory/3592-37-0x0000000000EB0000-0x00000000012EF000-memory.dmp

Filesize
4.2MB

Download
memory/3592-38-0x0000000000D90000-0x0000000000DBE000-memory.dmp

Filesize
184KB

Download
memory/3592-39-0x00000000052F0000-0x0000000005610000-memory.dmp

Filesize
3.1MB

Download
memory/3592-40-0x0000000005180000-0x0000000005213000-memory.dmp

Filesize
588KB

Download
memory/3980-32-0x0000000001190000-0x00000000011A4000-memory.dmp

Filesize
80KB

Download
memory/3980-31-0x00000000011D0000-0x00000000014F0000-memory.dmp

Filesize
3.1MB

Download
memory/3980-28-0x000000000041EBE0-mapping.dmp

Download
memory/3980-27-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4068-11-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads