formbook | 20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b

Analysis

max time kernel
153s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
12-06-2022 10:09

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General

Target

20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe
Size

426KB
MD5

cb783c9daff07c32ea86f1bbf2a32aa7
SHA1

67695f79d67dad3068b33216cdc1492b66d7602a
SHA256

20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b
SHA512

4c33ef083ea76477fc55873ff55f5d8fbcb0634d21787be6afcc024f8f69f96b201974a77ed88c6ccb5a2b8d70521b9da9bf25d402e26f3ada421e5253109346

Score

10^/10

formbook sh persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

3.8

Campaign

Decoy

studiogoparty.com

furi-mold.com

cdicoun-tombola.info

elizabethlhall.com

nakayama-hanasai.com

9910pe.com

iraqbreakingnews.com

91fyy.com

intersafetyland.com

dddadditive.com

gewuan.net

ikwxanxb.click

shenghangdianzi.com

nuskinmemory.com

sonrel-julie.com

rapidlegalcenter.com

jcldsp.com

dibamoviez.net

sochuan66.com

platformoneclothing.com

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
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4280-142-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral2/memory/4280-148-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral2/memory/2572-150-0x0000000000340000-0x000000000036A000-memory.dmp	formbook
behavioral2/memory/2572-154-0x0000000000340000-0x000000000036A000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	chkdsk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\IHRLVPPHUFM = "C:\\Program Files (x86)\\Nmdtd5\\_hktqh0qru.exe"	chkdsk.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 3 IoCs

Processes:

20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exevbc.exechkdsk.exe

description	pid	process	target process
PID 4828 set thread context of 4280	4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe	vbc.exe
PID 4280 set thread context of 2608	4280	vbc.exe	Explorer.EXE
PID 2572 set thread context of 2608	2572	chkdsk.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

chkdsk.exe

description ioc process

File opened for modification C:\Program Files (x86)\Nmdtd5\_hktqh0qru.exe chkdsk.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Nmdtd5\_hktqh0qru.exe	chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

Processes:

20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exevbc.exechkdsk.exe

pid	process
4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe
4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe
4280	vbc.exe
4280	vbc.exe
4280	vbc.exe
4280	vbc.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe
2572	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2608 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exechkdsk.exe

pid process

4280 vbc.exe
4280 vbc.exe
4280 vbc.exe
2572 chkdsk.exe
2572 chkdsk.exe

pid	process
2608	Explorer.EXE

pid	process
4280	vbc.exe
4280	vbc.exe
4280	vbc.exe
2572	chkdsk.exe
2572	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exevbc.exechkdsk.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe
Token: SeDebugPrivilege	4280	vbc.exe
Token: SeDebugPrivilege	2572	chkdsk.exe
Token: SeShutdownPrivilege	2608	Explorer.EXE
Token: SeCreatePagefilePrivilege	2608	Explorer.EXE
Token: SeShutdownPrivilege	2608	Explorer.EXE
Token: SeCreatePagefilePrivilege	2608	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.execsc.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 4828 wrote to memory of 5048	4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe	csc.exe
PID 4828 wrote to memory of 5048	4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe	csc.exe
PID 4828 wrote to memory of 5048	4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe	csc.exe
PID 5048 wrote to memory of 480	5048	csc.exe	cvtres.exe
PID 5048 wrote to memory of 480	5048	csc.exe	cvtres.exe
PID 5048 wrote to memory of 480	5048	csc.exe	cvtres.exe
PID 4828 wrote to memory of 4280	4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe	vbc.exe
PID 4828 wrote to memory of 4280	4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe	vbc.exe
PID 4828 wrote to memory of 4280	4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe	vbc.exe
PID 4828 wrote to memory of 4280	4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe	vbc.exe
PID 4828 wrote to memory of 4280	4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe	vbc.exe
PID 4828 wrote to memory of 4280	4828	20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe	vbc.exe
PID 2608 wrote to memory of 2572	2608	Explorer.EXE	chkdsk.exe
PID 2608 wrote to memory of 2572	2608	Explorer.EXE	chkdsk.exe
PID 2608 wrote to memory of 2572	2608	Explorer.EXE	chkdsk.exe
PID 2572 wrote to memory of 1464	2572	chkdsk.exe	cmd.exe
PID 2572 wrote to memory of 1464	2572	chkdsk.exe	cmd.exe
PID 2572 wrote to memory of 1464	2572	chkdsk.exe	cmd.exe
PID 2572 wrote to memory of 2124	2572	chkdsk.exe	cmd.exe
PID 2572 wrote to memory of 2124	2572	chkdsk.exe	cmd.exe
PID 2572 wrote to memory of 2124	2572	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2608

C:\Users\Admin\AppData\Local\Temp\20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe
"C:\Users\Admin\AppData\Local\Temp\20f07f9db62afe07a6a3b025487624ef260d2a2ef5043417986e5334556e517b.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4828

C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\zyvjzywc\zyvjzywc.cmdline"
3⤵
- Suspicious use of WriteProcessMemory
PID:5048

C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES44F8.tmp" "c:\Users\Admin\AppData\Local\Temp\zyvjzywc\CSC53565572B31140A7BD994FAB7E93B9CD.TMP"
4⤵
PID:480

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4280

C:\Windows\SysWOW64\autofmt.exe
"C:\Windows\SysWOW64\autofmt.exe"
2⤵
PID:1460

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2572

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
3⤵
PID:1464

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:2124

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES44F8.tmp
Filesize
1KB

MD5
bf210debb8a0c3e1c57bc639639068d2

SHA1
72ed73d91c938f442a0f991b4e1b1d5f61a186f5

SHA256
aab7830ab2c3689900ad2833778025bd0b636e18204c23053db9c6efc0d81260

SHA512
2a0a49a9f239a8c96bc1b4e010a4fd413291cf28e666721e3919705206fa52bcc1b709d5a7d5083ea36caf2c79280aebce1e07a08e540e3ca1f5ad4a9f2ae8ac

Download Submit
C:\Users\Admin\AppData\Local\Temp\zyvjzywc\zyvjzywc.dll
Filesize
20KB

MD5
0333574477cd48e658a05a879a9935ec

SHA1
827af4f8c05c6487ece7f324e120159b325ac1e0

SHA256
dc25dace363cf20e2cba4c004b92fce53c8ff1ca12c8a46a5c3b7dbff36340fd

SHA512
cfd975ca57cca2f2605d25d2901978f7e4ac8e8db03ba8643f21c2d8314dc96a4d15a620f8c2f27666696185d7da867543bc608acb878f8fc0f4bdbddd851293

Download Submit
C:\Users\Admin\AppData\Local\Temp\zyvjzywc\zyvjzywc.pdb
Filesize
65KB

MD5
63cd31bb7efbd878b533e81fa5d8fcc7

SHA1
7c9faea987667455ebaa89f7ee2e05dbe25b633c

SHA256
17e299808c8bdcbab6b0fc3567f95e73df0683e70ace06fd47b9cb8ff4d5d7f1

SHA512
33c5453d7349b493a11def251dc4fd1178d09e9c7e636105c2d89aaddadb1c04146ddf77fda743ead023bb6c09c275681b3effe8562c08156c3b7e6ad889f16a

Download Submit
C:\Users\Admin\AppData\Roaming\5Q6010RE\5Q6logim.jpeg
Filesize
78KB

MD5
5fb3fca21a41b92ed0d22793fe5aa455

SHA1
042b4611c980f38ab9f39df6467112d591b319e0

SHA256
887a50b0301310b51d660d06ae6420b6fcb83ae49113de4beb16a1b28db346f4

SHA512
247a4522f296669f7b8f6feee0627728d3da7638efb6048397cc612567086abd0fd586d3ea1abbafab7d88ac13b21dc43903006ea3e9dbbb6e1b806b41a6f45c

Download Submit
C:\Users\Admin\AppData\Roaming\5Q6010RE\5Q6logrg.ini
Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\5Q6010RE\5Q6logri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\5Q6010RE\5Q6logrv.ini
Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\zyvjzywc\CSC53565572B31140A7BD994FAB7E93B9CD.TMP
Filesize
1KB

MD5
e86c138f0b1e9fce4ab2096d400f536e

SHA1
46cfa110222d3838d46086d2dee85f33b488014b

SHA256
1741706f214713211ab8270452b611fe9505c0ad88b29428a875046462726e9f

SHA512
013b4793a3881c72e01df44a4fd013db163bcf708ea47579ffb80afebfb88f1e4bdb8478fd445207b5af7da7745993c05e1f90262a6242008a4b693442d0a17d

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\zyvjzywc\zyvjzywc.0.cs
Filesize
44KB

MD5
2830d7e4a34ee5547dfed648a8c2dd7d

SHA1
bf759b96e33a56de14b09d27c53dbdd5324b8df2

SHA256
b176995fbe69d28185a99632f7cbe9cced3aa2581738d81c977ff924d6e23b13

SHA512
6c67435b3dcb1ae67da1d7f34c21fdd73e2283b92780a214beb0a747dfdca28e1a37296fe2561a17fba59382f2ead599a7dabea8d7d474df0a22d65c720d3c16

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\zyvjzywc\zyvjzywc.cmdline
Filesize
248B

MD5
2ca7b72fa9690f99c4ba718535294450

SHA1
3430254ce537d2774ab27191c8b26732ae7011a7

SHA256
7237458f19c45103278bd03e6dc8c4ffdc2b883edf2b1cc5da5e3de7d3d8799c

SHA512
2e9e8d86ae253782318d4cad0f4a6c8e892322731e242690e7b4830774c001a01911445c413aa3e8c5f5eb0f3bd3fb446e5c596686b31fde22161a7537265984

Download Submit
memory/480-134-0x0000000000000000-mapping.dmp

Download
memory/1464-151-0x0000000000000000-mapping.dmp

Download
memory/2124-157-0x0000000000000000-mapping.dmp

Download
memory/2572-147-0x0000000000000000-mapping.dmp

Download
memory/2572-152-0x0000000000E20000-0x000000000116A000-memory.dmp

Filesize
3.3MB

Download
memory/2572-154-0x0000000000340000-0x000000000036A000-memory.dmp

Filesize
168KB

Download
memory/2572-153-0x0000000000D10000-0x0000000000DA3000-memory.dmp

Filesize
588KB

Download
memory/2572-149-0x0000000000AA0000-0x0000000000AAA000-memory.dmp

Filesize
40KB

Download
memory/2572-150-0x0000000000340000-0x000000000036A000-memory.dmp

Filesize
168KB

Download
memory/2608-155-0x00000000084A0000-0x0000000008550000-memory.dmp

Filesize
704KB

Download
memory/2608-146-0x0000000008AD0000-0x0000000008C77000-memory.dmp

Filesize
1.7MB

Download
memory/2608-156-0x00000000084A0000-0x0000000008550000-memory.dmp

Filesize
704KB

Download
memory/4280-148-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4280-145-0x00000000005E0000-0x00000000005F4000-memory.dmp

Filesize
80KB

Download
memory/4280-144-0x0000000000A80000-0x0000000000DCA000-memory.dmp

Filesize
3.3MB

Download
memory/4280-142-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4280-141-0x0000000000000000-mapping.dmp

Download
memory/4828-130-0x0000000000720000-0x0000000000792000-memory.dmp

Filesize
456KB

Download
memory/4828-140-0x0000000005890000-0x000000000592C000-memory.dmp

Filesize
624KB

Download
memory/4828-139-0x0000000005110000-0x00000000051A2000-memory.dmp

Filesize
584KB

Download
memory/5048-131-0x0000000000000000-mapping.dmp

Download