formbook | 69ba51c4fa9631796b399c3ecba7a440bd5beca95c24bd3fcc06b501893f5c72

General

Target

NEW COMPLIANCE 18.01.2021.xlsx
Size

2.1MB
MD5

c027e83f6c746837fe6d7577a81fd050
SHA1

172e1532e621272dcf7389b3c9e90a5dcbf266b4
SHA256

69ba51c4fa9631796b399c3ecba7a440bd5beca95c24bd3fcc06b501893f5c72
SHA512

91a1af35f3e8d950fc18e310b2f6f6032224d6a37c174f4f24a5fa8a24b47c8e31a70d818d705afba911478d50364fe32a4fadcea6f39a288842f81e2fc4eb74

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.rizrvd.com/bw82/

Decoy

fundamentaliemef.com

gallerybrows.com

leadeligey.com

octoberx2.online

climaxnovels.com

gdsjgf.com

curateherstories.com

blacksailus.com

yjpps.com

gmobilet.com

fcoins.club

foreverlive2027.com

healthyfifties.com

wmarquezy.com

housebulb.com

thebabyfriendly.com

primajayaintiperkasa.com

learnplaychess.com

chrisbubser.digital

xn--avenr-wsa.com

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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1708-20-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/1708-21-0x000000000041CFF0-mapping.dmp	xloader
behavioral1/memory/1148-31-0x0000000000090000-0x00000000000B8000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

5 1220 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1188 vbc.exe
1708 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1220 EQNEDT32.EXE
1220 EQNEDT32.EXE
1220 EQNEDT32.EXE
1220 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
5	1220	EQNEDT32.EXE

pid	process
1188	vbc.exe
1708	vbc.exe

pid	process
1220	EQNEDT32.EXE
1220	EQNEDT32.EXE
1220	EQNEDT32.EXE
1220	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.execmstp.exe

description	pid	process	target process
PID 1188 set thread context of 1708	1188	vbc.exe	vbc.exe
PID 1708 set thread context of 1264	1708	vbc.exe	Explorer.EXE
PID 1148 set thread context of 1264	1148	cmstp.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

1220 EQNEDT32.EXE

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

pid	process
1220	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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

644 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

vbc.execmstp.exe

pid process

1708 vbc.exe
1708 vbc.exe
1148 cmstp.exe
1148 cmstp.exe
1148 cmstp.exe
1148 cmstp.exe
1148 cmstp.exe
1148 cmstp.exe
1148 cmstp.exe
1148 cmstp.exe
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.execmstp.exe

pid process

1708 vbc.exe
1708 vbc.exe
1708 vbc.exe
1148 cmstp.exe
1148 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.execmstp.exe

description pid process

Token: SeDebugPrivilege 1708 vbc.exe
Token: SeDebugPrivilege 1148 cmstp.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

644 EXCEL.EXE
644 EXCEL.EXE
644 EXCEL.EXE

pid	process
644	EXCEL.EXE

pid	process
1708	vbc.exe
1708	vbc.exe
1148	cmstp.exe
1148	cmstp.exe
1148	cmstp.exe
1148	cmstp.exe
1148	cmstp.exe
1148	cmstp.exe
1148	cmstp.exe
1148	cmstp.exe

pid	process
1708	vbc.exe
1708	vbc.exe
1708	vbc.exe
1148	cmstp.exe
1148	cmstp.exe

description	pid	process
Token: SeDebugPrivilege	1708	vbc.exe
Token: SeDebugPrivilege	1148	cmstp.exe

pid	process
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1220 wrote to memory of 1188	1220	EQNEDT32.EXE	vbc.exe
PID 1220 wrote to memory of 1188	1220	EQNEDT32.EXE	vbc.exe
PID 1220 wrote to memory of 1188	1220	EQNEDT32.EXE	vbc.exe
PID 1220 wrote to memory of 1188	1220	EQNEDT32.EXE	vbc.exe
PID 1188 wrote to memory of 1708	1188	vbc.exe	vbc.exe
PID 1188 wrote to memory of 1708	1188	vbc.exe	vbc.exe
PID 1188 wrote to memory of 1708	1188	vbc.exe	vbc.exe
PID 1188 wrote to memory of 1708	1188	vbc.exe	vbc.exe
PID 1188 wrote to memory of 1708	1188	vbc.exe	vbc.exe
PID 1188 wrote to memory of 1708	1188	vbc.exe	vbc.exe
PID 1188 wrote to memory of 1708	1188	vbc.exe	vbc.exe
PID 1264 wrote to memory of 1148	1264	Explorer.EXE	cmstp.exe
PID 1264 wrote to memory of 1148	1264	Explorer.EXE	cmstp.exe
PID 1264 wrote to memory of 1148	1264	Explorer.EXE	cmstp.exe
PID 1264 wrote to memory of 1148	1264	Explorer.EXE	cmstp.exe
PID 1264 wrote to memory of 1148	1264	Explorer.EXE	cmstp.exe
PID 1264 wrote to memory of 1148	1264	Explorer.EXE	cmstp.exe
PID 1264 wrote to memory of 1148	1264	Explorer.EXE	cmstp.exe
PID 1148 wrote to memory of 1956	1148	cmstp.exe	cmd.exe
PID 1148 wrote to memory of 1956	1148	cmstp.exe	cmd.exe
PID 1148 wrote to memory of 1956	1148	cmstp.exe	cmd.exe
PID 1148 wrote to memory of 1956	1148	cmstp.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1264

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\NEW COMPLIANCE 18.01.2021.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:644

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1148

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1956

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:1220

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1188

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
PID:1708

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Public\vbc.exe
MD5
ac44dce1ac1b90aec13f71bed7a27f14

SHA1
baadfc03a182da09e604235679cdde0feae32e28

SHA256
10d1e607e170563551b4dc8ce160b907067143b8222418cab17620481c3471c9

SHA512
435e10cd48ee663a28912aeb8dc13fb9cb09ee86a92113f2d88f75548b969378881de60eaf72e694f3c49db1cc040c1fa0aea8f8fceeb05cb492c32d0a2ad731

Download Submit
C:\Users\Public\vbc.exe
MD5
ac44dce1ac1b90aec13f71bed7a27f14

SHA1
baadfc03a182da09e604235679cdde0feae32e28

SHA256
10d1e607e170563551b4dc8ce160b907067143b8222418cab17620481c3471c9

SHA512
435e10cd48ee663a28912aeb8dc13fb9cb09ee86a92113f2d88f75548b969378881de60eaf72e694f3c49db1cc040c1fa0aea8f8fceeb05cb492c32d0a2ad731

Download Submit
C:\Users\Public\vbc.exe
MD5
ac44dce1ac1b90aec13f71bed7a27f14

SHA1
baadfc03a182da09e604235679cdde0feae32e28

SHA256
10d1e607e170563551b4dc8ce160b907067143b8222418cab17620481c3471c9

SHA512
435e10cd48ee663a28912aeb8dc13fb9cb09ee86a92113f2d88f75548b969378881de60eaf72e694f3c49db1cc040c1fa0aea8f8fceeb05cb492c32d0a2ad731

Download Submit
\Users\Public\vbc.exe
MD5
ac44dce1ac1b90aec13f71bed7a27f14

SHA1
baadfc03a182da09e604235679cdde0feae32e28

SHA256
10d1e607e170563551b4dc8ce160b907067143b8222418cab17620481c3471c9

SHA512
435e10cd48ee663a28912aeb8dc13fb9cb09ee86a92113f2d88f75548b969378881de60eaf72e694f3c49db1cc040c1fa0aea8f8fceeb05cb492c32d0a2ad731

Download Submit
\Users\Public\vbc.exe
MD5
ac44dce1ac1b90aec13f71bed7a27f14

SHA1
baadfc03a182da09e604235679cdde0feae32e28

SHA256
10d1e607e170563551b4dc8ce160b907067143b8222418cab17620481c3471c9

SHA512
435e10cd48ee663a28912aeb8dc13fb9cb09ee86a92113f2d88f75548b969378881de60eaf72e694f3c49db1cc040c1fa0aea8f8fceeb05cb492c32d0a2ad731

Download Submit
\Users\Public\vbc.exe
MD5
ac44dce1ac1b90aec13f71bed7a27f14

SHA1
baadfc03a182da09e604235679cdde0feae32e28

SHA256
10d1e607e170563551b4dc8ce160b907067143b8222418cab17620481c3471c9

SHA512
435e10cd48ee663a28912aeb8dc13fb9cb09ee86a92113f2d88f75548b969378881de60eaf72e694f3c49db1cc040c1fa0aea8f8fceeb05cb492c32d0a2ad731

Download Submit
\Users\Public\vbc.exe
MD5
ac44dce1ac1b90aec13f71bed7a27f14

SHA1
baadfc03a182da09e604235679cdde0feae32e28

SHA256
10d1e607e170563551b4dc8ce160b907067143b8222418cab17620481c3471c9

SHA512
435e10cd48ee663a28912aeb8dc13fb9cb09ee86a92113f2d88f75548b969378881de60eaf72e694f3c49db1cc040c1fa0aea8f8fceeb05cb492c32d0a2ad731

Download Submit
memory/644-3-0x0000000071581000-0x0000000071583000-memory.dmp

Filesize
8KB

Download
memory/644-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/644-2-0x000000002F891000-0x000000002F894000-memory.dmp

Filesize
12KB

Download
memory/1140-6-0x000007FEF7790000-0x000007FEF7A0A000-memory.dmp

Filesize
2.5MB

Download
memory/1148-32-0x0000000002040000-0x0000000002343000-memory.dmp

Filesize
3.0MB

Download
memory/1148-31-0x0000000000090000-0x00000000000B8000-memory.dmp

Filesize
160KB

Download
memory/1148-30-0x0000000000A90000-0x0000000000AA8000-memory.dmp

Filesize
96KB

Download
memory/1148-33-0x0000000001EB0000-0x0000000001F3F000-memory.dmp

Filesize
572KB

Download
memory/1148-27-0x0000000000000000-mapping.dmp

Download
memory/1188-17-0x0000000007350000-0x0000000007351000-memory.dmp

Filesize
4KB

Download
memory/1188-19-0x0000000005410000-0x00000000054B4000-memory.dmp

Filesize
656KB

Download
memory/1188-18-0x0000000000420000-0x0000000000433000-memory.dmp

Filesize
76KB

Download
memory/1188-15-0x0000000000800000-0x0000000000801000-memory.dmp

Filesize
4KB

Download
memory/1188-14-0x000000006C630000-0x000000006CD1E000-memory.dmp

Filesize
6.9MB

Download
memory/1188-11-0x0000000000000000-mapping.dmp

Download
memory/1220-5-0x00000000765E1000-0x00000000765E3000-memory.dmp

Filesize
8KB

Download
memory/1264-26-0x0000000004BB0000-0x0000000004CAE000-memory.dmp

Filesize
1016KB

Download
memory/1708-20-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1708-21-0x000000000041CFF0-mapping.dmp

Download
memory/1708-24-0x0000000000B10000-0x0000000000E13000-memory.dmp

Filesize
3.0MB

Download
memory/1708-25-0x0000000000160000-0x0000000000170000-memory.dmp

Filesize
64KB

Download
memory/1956-29-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads