formbook | cadb48c6d6cb9a5806bb74899c4837916538e2b9257dcc0f28640cc8179fd391

General

Target

Pre-order.xlsx
Size

2.2MB
MD5

ff38cf4d7025c0a5be3d81ac520c498b
SHA1

2ad3bf55a7ac4c636ecdf1b703d46afd190b9525
SHA256

cadb48c6d6cb9a5806bb74899c4837916538e2b9257dcc0f28640cc8179fd391
SHA512

039351f7634ef17c18047c4f1e4fa2be2e71660f814019c014e69900f3a4fcc4c9153a1656d4e1ae15ad5203a2db5a2679922fe6716a1ccfef316b1a7217a0f9

Score

10^/10

formbook xloader loader rat spyware stealer trojan upx

Malware Config

Extracted

Family

formbook

C2

http://www.douzhuan168.com/o8na/

Decoy

www1669099.com

digitalallserv.com

thiszzzwq.info

dallasoswalt.info

ladolcefesta.com

mariamalikially.com

origenbsas.com

antichoc.watch

tropicalbirdtoys.com

bbluedotvrwdbuy.com

racevx.xyz

ut-trustandwill.com

maximumhomeoffers.com

wrapname.com

hypelighystrip.com

oshoum2020.com

parkwestmi.com

themodumall.com

tempuslawnandsnow.com

dailypromo.xyz

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/288-16-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/288-17-0x000000000041D040-mapping.dmp	xloader
behavioral1/memory/552-20-0x0000000000220000-0x000000000024A000-memory.dmp	xloader
behavioral1/memory/1604-30-0x0000000000080000-0x00000000000A8000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 316 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

552 vbc.exe
288 vbc.exe

flow	pid	process
6	316	EQNEDT32.EXE

pid	process
552	vbc.exe
288	vbc.exe

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
\Users\Public\vbc.exe	upx
\Users\Public\vbc.exe	upx
\Users\Public\vbc.exe	upx
\Users\Public\vbc.exe	upx
\Users\Public\vbc.exe	upx
C:\Users\Public\vbc.exe	upx
C:\Users\Public\vbc.exe	upx
C:\Users\Public\vbc.exe	upx

Loads dropped DLL 5 IoCs

Processes:

EQNEDT32.EXE

pid process

316 EQNEDT32.EXE
316 EQNEDT32.EXE
316 EQNEDT32.EXE
316 EQNEDT32.EXE
316 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
316	EQNEDT32.EXE
316	EQNEDT32.EXE
316	EQNEDT32.EXE
316	EQNEDT32.EXE
316	EQNEDT32.EXE

Suspicious use of SetThreadContext 4 IoCs

Processes:

vbc.exevbc.exewlanext.exe

description	pid	process	target process
PID 552 set thread context of 288	552	vbc.exe	vbc.exe
PID 288 set thread context of 1200	288	vbc.exe	Explorer.EXE
PID 288 set thread context of 1200	288	vbc.exe	Explorer.EXE
PID 1604 set thread context of 1200	1604	wlanext.exe	Explorer.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

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

Processes:

EQNEDT32.EXE

pid process

316 EQNEDT32.EXE

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

pid	process
316	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

384 EXCEL.EXE

pid	process
384	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

vbc.exewlanext.exe

pid	process
288	vbc.exe
288	vbc.exe
288	vbc.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe
1604	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

vbc.exewlanext.exe

pid process

288 vbc.exe
288 vbc.exe
288 vbc.exe
288 vbc.exe
1604 wlanext.exe
1604 wlanext.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exeExplorer.EXEwlanext.exe

description pid process

Token: SeDebugPrivilege 288 vbc.exe
Token: SeShutdownPrivilege 1200 Explorer.EXE
Token: SeDebugPrivilege 1604 wlanext.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
1200 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

384 EXCEL.EXE
384 EXCEL.EXE
384 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	288	vbc.exe
Token: SeShutdownPrivilege	1200	Explorer.EXE
Token: SeDebugPrivilege	1604	wlanext.exe

pid	process
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exevbc.exewlanext.exe

description	pid	process	target process
PID 316 wrote to memory of 552	316	EQNEDT32.EXE	vbc.exe
PID 316 wrote to memory of 552	316	EQNEDT32.EXE	vbc.exe
PID 316 wrote to memory of 552	316	EQNEDT32.EXE	vbc.exe
PID 316 wrote to memory of 552	316	EQNEDT32.EXE	vbc.exe
PID 552 wrote to memory of 288	552	vbc.exe	vbc.exe
PID 552 wrote to memory of 288	552	vbc.exe	vbc.exe
PID 552 wrote to memory of 288	552	vbc.exe	vbc.exe
PID 552 wrote to memory of 288	552	vbc.exe	vbc.exe
PID 552 wrote to memory of 288	552	vbc.exe	vbc.exe
PID 552 wrote to memory of 288	552	vbc.exe	vbc.exe
PID 552 wrote to memory of 288	552	vbc.exe	vbc.exe
PID 288 wrote to memory of 1604	288	vbc.exe	wlanext.exe
PID 288 wrote to memory of 1604	288	vbc.exe	wlanext.exe
PID 288 wrote to memory of 1604	288	vbc.exe	wlanext.exe
PID 288 wrote to memory of 1604	288	vbc.exe	wlanext.exe
PID 1604 wrote to memory of 1708	1604	wlanext.exe	cmd.exe
PID 1604 wrote to memory of 1708	1604	wlanext.exe	cmd.exe
PID 1604 wrote to memory of 1708	1604	wlanext.exe	cmd.exe
PID 1604 wrote to memory of 1708	1604	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1200

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\Pre-order.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:384

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
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:316

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:552

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:288

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
4⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1604

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
5⤵
PID:1708

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

Scripting

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

Scripting

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Public\vbc.exe
MD5
f0f1a843b50f76e7236cc32dedf1d65d

SHA1
f84f30a93355d46bbdbebfedc760188879b6db0b

SHA256
3ed3126cfc3094e0f1a5736369cc55f68feb9bf6c9e31ba6e00e36f11917bc18

SHA512
f856db58b39aacbc858a248a7352ee20e63ac3a50966ebb9a95bcacad6221d98eff7a8f4024fae08badfc45396a7312a8bf70e69e5802777b7e34ef6e48342a2

Download Submit
C:\Users\Public\vbc.exe
MD5
f0f1a843b50f76e7236cc32dedf1d65d

SHA1
f84f30a93355d46bbdbebfedc760188879b6db0b

SHA256
3ed3126cfc3094e0f1a5736369cc55f68feb9bf6c9e31ba6e00e36f11917bc18

SHA512
f856db58b39aacbc858a248a7352ee20e63ac3a50966ebb9a95bcacad6221d98eff7a8f4024fae08badfc45396a7312a8bf70e69e5802777b7e34ef6e48342a2

Download Submit
C:\Users\Public\vbc.exe
MD5
f0f1a843b50f76e7236cc32dedf1d65d

SHA1
f84f30a93355d46bbdbebfedc760188879b6db0b

SHA256
3ed3126cfc3094e0f1a5736369cc55f68feb9bf6c9e31ba6e00e36f11917bc18

SHA512
f856db58b39aacbc858a248a7352ee20e63ac3a50966ebb9a95bcacad6221d98eff7a8f4024fae08badfc45396a7312a8bf70e69e5802777b7e34ef6e48342a2

Download Submit
\Users\Public\vbc.exe
MD5
f0f1a843b50f76e7236cc32dedf1d65d

SHA1
f84f30a93355d46bbdbebfedc760188879b6db0b

SHA256
3ed3126cfc3094e0f1a5736369cc55f68feb9bf6c9e31ba6e00e36f11917bc18

SHA512
f856db58b39aacbc858a248a7352ee20e63ac3a50966ebb9a95bcacad6221d98eff7a8f4024fae08badfc45396a7312a8bf70e69e5802777b7e34ef6e48342a2

Download Submit
\Users\Public\vbc.exe
MD5
f0f1a843b50f76e7236cc32dedf1d65d

SHA1
f84f30a93355d46bbdbebfedc760188879b6db0b

SHA256
3ed3126cfc3094e0f1a5736369cc55f68feb9bf6c9e31ba6e00e36f11917bc18

SHA512
f856db58b39aacbc858a248a7352ee20e63ac3a50966ebb9a95bcacad6221d98eff7a8f4024fae08badfc45396a7312a8bf70e69e5802777b7e34ef6e48342a2

Download Submit
\Users\Public\vbc.exe
MD5
f0f1a843b50f76e7236cc32dedf1d65d

SHA1
f84f30a93355d46bbdbebfedc760188879b6db0b

SHA256
3ed3126cfc3094e0f1a5736369cc55f68feb9bf6c9e31ba6e00e36f11917bc18

SHA512
f856db58b39aacbc858a248a7352ee20e63ac3a50966ebb9a95bcacad6221d98eff7a8f4024fae08badfc45396a7312a8bf70e69e5802777b7e34ef6e48342a2

Download Submit
\Users\Public\vbc.exe
MD5
f0f1a843b50f76e7236cc32dedf1d65d

SHA1
f84f30a93355d46bbdbebfedc760188879b6db0b

SHA256
3ed3126cfc3094e0f1a5736369cc55f68feb9bf6c9e31ba6e00e36f11917bc18

SHA512
f856db58b39aacbc858a248a7352ee20e63ac3a50966ebb9a95bcacad6221d98eff7a8f4024fae08badfc45396a7312a8bf70e69e5802777b7e34ef6e48342a2

Download Submit
\Users\Public\vbc.exe
MD5
f0f1a843b50f76e7236cc32dedf1d65d

SHA1
f84f30a93355d46bbdbebfedc760188879b6db0b

SHA256
3ed3126cfc3094e0f1a5736369cc55f68feb9bf6c9e31ba6e00e36f11917bc18

SHA512
f856db58b39aacbc858a248a7352ee20e63ac3a50966ebb9a95bcacad6221d98eff7a8f4024fae08badfc45396a7312a8bf70e69e5802777b7e34ef6e48342a2

Download Submit
memory/288-16-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/288-17-0x000000000041D040-mapping.dmp

Download
memory/288-25-0x0000000000480000-0x0000000000490000-memory.dmp

Filesize
64KB

Download
memory/288-22-0x0000000000700000-0x0000000000A03000-memory.dmp

Filesize
3.0MB

Download
memory/288-23-0x00000000003E0000-0x00000000003F0000-memory.dmp

Filesize
64KB

Download
memory/316-5-0x0000000076241000-0x0000000076243000-memory.dmp

Filesize
8KB

Download
memory/384-2-0x000000002FFA1000-0x000000002FFA4000-memory.dmp

Filesize
12KB

Download
memory/384-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/384-3-0x0000000071281000-0x0000000071283000-memory.dmp

Filesize
8KB

Download
memory/520-6-0x000007FEF7300000-0x000007FEF757A000-memory.dmp

Filesize
2.5MB

Download
memory/552-12-0x0000000000000000-mapping.dmp

Download
memory/552-19-0x0000000000020000-0x0000000000040000-memory.dmp

Filesize
128KB

Download
memory/552-20-0x0000000000220000-0x000000000024A000-memory.dmp

Filesize
168KB

Download
memory/552-14-0x0000000005100000-0x0000000005111000-memory.dmp

Filesize
68KB

Download
memory/1200-26-0x0000000004F60000-0x00000000050C6000-memory.dmp

Filesize
1.4MB

Download
memory/1200-24-0x00000000042E0000-0x0000000004421000-memory.dmp

Filesize
1.3MB

Download
memory/1200-33-0x0000000009150000-0x00000000092DD000-memory.dmp

Filesize
1.6MB

Download
memory/1604-27-0x0000000000000000-mapping.dmp

Download
memory/1604-30-0x0000000000080000-0x00000000000A8000-memory.dmp

Filesize
160KB

Download
memory/1604-31-0x0000000001EE0000-0x00000000021E3000-memory.dmp

Filesize
3.0MB

Download
memory/1604-29-0x00000000000C0000-0x00000000000D6000-memory.dmp

Filesize
88KB

Download
memory/1604-32-0x0000000001C10000-0x0000000001C9F000-memory.dmp

Filesize
572KB

Download
memory/1708-28-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads