formbook | 1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa

Analysis

max time kernel
187s
max time network
184s
platform
windows7_x64
resource
win7-20220414-en
submitted
12-06-2022 22:59

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General

Target

1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe
Size

213KB
MD5

1af681084e3d0b909e8ff56e4cee3c80
SHA1

fc8532c8feb0ce096e761020678744824dc1607c
SHA256

1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa
SHA512

b9d0d1cb4cf3ac31f0b5f772e8e7dcdd5c13b9410dc52d22dfa42c6d34f98b13582319688a52c3f85bc0d2f46782f621ded3cdd70be1401846b2fc2ee449e4bf

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

Formbook Payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1896-67-0x0000000000BD0000-0x0000000000BFA000-memory.dmp	formbook
behavioral1/memory/1800-72-0x000000000041B5F0-mapping.dmp	formbook
behavioral1/memory/1800-78-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/692-81-0x00000000000E0000-0x000000000010A000-memory.dmp	formbook
behavioral1/memory/692-86-0x00000000000E0000-0x000000000010A000-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:

NETSTAT.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	NETSTAT.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\JHD0H4187VE = "C:\\Program Files (x86)\\Drfi0if\\mfcdn6hz.exe"	NETSTAT.EXE

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 3 IoCs

Processes:

1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exevbc.exeNETSTAT.EXE

description	pid	process	target process
PID 1896 set thread context of 1800	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	vbc.exe
PID 1800 set thread context of 1280	1800	vbc.exe	Explorer.EXE
PID 692 set thread context of 1280	692	NETSTAT.EXE	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

NETSTAT.EXE

description ioc process

File opened for modification C:\Program Files (x86)\Drfi0if\mfcdn6hz.exe NETSTAT.EXE
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

NETSTAT.EXE

pid process

692 NETSTAT.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Drfi0if\mfcdn6hz.exe	NETSTAT.EXE

pid	process
692	NETSTAT.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

NETSTAT.EXE

description	ioc	process
Key created	\Registry\User\S-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exevbc.exeNETSTAT.EXE

pid	process
1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe
1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe
1800	vbc.exe
1800	vbc.exe
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE
692	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exeNETSTAT.EXE

pid process

1800 vbc.exe
1800 vbc.exe
1800 vbc.exe
692 NETSTAT.EXE
692 NETSTAT.EXE

pid	process
1800	vbc.exe
1800	vbc.exe
1800	vbc.exe
692	NETSTAT.EXE
692	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exevbc.exeNETSTAT.EXEExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe
Token: SeDebugPrivilege	1800	vbc.exe
Token: SeDebugPrivilege	692	NETSTAT.EXE
Token: SeShutdownPrivilege	1280	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1280 Explorer.EXE
1280 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1280 Explorer.EXE
1280 Explorer.EXE

pid	process
1280	Explorer.EXE
1280	Explorer.EXE

pid	process
1280	Explorer.EXE
1280	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.execsc.exeExplorer.EXENETSTAT.EXE

description	pid	process	target process
PID 1896 wrote to memory of 1984	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	csc.exe
PID 1896 wrote to memory of 1984	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	csc.exe
PID 1896 wrote to memory of 1984	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	csc.exe
PID 1896 wrote to memory of 1984	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	csc.exe
PID 1984 wrote to memory of 2028	1984	csc.exe	cvtres.exe
PID 1984 wrote to memory of 2028	1984	csc.exe	cvtres.exe
PID 1984 wrote to memory of 2028	1984	csc.exe	cvtres.exe
PID 1984 wrote to memory of 2028	1984	csc.exe	cvtres.exe
PID 1896 wrote to memory of 1800	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	vbc.exe
PID 1896 wrote to memory of 1800	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	vbc.exe
PID 1896 wrote to memory of 1800	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	vbc.exe
PID 1896 wrote to memory of 1800	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	vbc.exe
PID 1896 wrote to memory of 1800	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	vbc.exe
PID 1896 wrote to memory of 1800	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	vbc.exe
PID 1896 wrote to memory of 1800	1896	1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe	vbc.exe
PID 1280 wrote to memory of 692	1280	Explorer.EXE	NETSTAT.EXE
PID 1280 wrote to memory of 692	1280	Explorer.EXE	NETSTAT.EXE
PID 1280 wrote to memory of 692	1280	Explorer.EXE	NETSTAT.EXE
PID 1280 wrote to memory of 692	1280	Explorer.EXE	NETSTAT.EXE
PID 692 wrote to memory of 584	692	NETSTAT.EXE	cmd.exe
PID 692 wrote to memory of 584	692	NETSTAT.EXE	cmd.exe
PID 692 wrote to memory of 584	692	NETSTAT.EXE	cmd.exe
PID 692 wrote to memory of 584	692	NETSTAT.EXE	cmd.exe

C:\Users\Admin\AppData\Local\Temp\1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe
"C:\Users\Admin\AppData\Local\Temp\1deac5c42c5c12f811a14593da40c7589da9274b67086ac62174498923c893fa.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1896

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\szlo4t0f\szlo4t0f.cmdline"
2⤵
- Suspicious use of WriteProcessMemory
PID:1984

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\RESA786.tmp" "c:\Users\Admin\AppData\Local\Temp\szlo4t0f\CSC9D5F2A3BA4FF476AB787BC71262C7BD2.TMP"
3⤵
PID:2028

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1800

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1280

C:\Windows\SysWOW64\NETSTAT.EXE
"C:\Windows\SysWOW64\NETSTAT.EXE"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Gathers network information
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:692

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
3⤵
PID:584

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Command-Line Interface

T1059

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RESA786.tmp
Filesize
1KB

MD5
7ede7103d621df14410444de94a8c9f0

SHA1
436d5295ec73d5ad9093b58d7a042369097a1d6b

SHA256
27ef490c6138c5796403897902283c736dd4f1dc998e967668385070786a13d6

SHA512
7d3034fb6ebc00b11e983b01fb67e6ab7558cc672b8b7a05b8c1be5642682672fd46cd525432e897126cba0a5aecff6aebdf4a97c0fee24dd1d2be3604c4a08b

Download Submit
C:\Users\Admin\AppData\Local\Temp\szlo4t0f\szlo4t0f.dll
Filesize
6KB

MD5
6f42214abb71f8658b53ce012696caf5

SHA1
d70994e603ece2aa82e11279c234555891c8a1d3

SHA256
ebb20e0ee25f967d35e25e120083582cdfc5489e988645649f15caaed90bf590

SHA512
d5fb877e78c05a21de0ef02faa50c7e48bea9937ef10b3d1d833a60905fdc3b3decd969bc181f15a027b29472dab88bbcc1f29dec62c4cfb533c432a796ccf02

Download Submit
C:\Users\Admin\AppData\Local\Temp\szlo4t0f\szlo4t0f.pdb
Filesize
15KB

MD5
c97f91449fb85b0b6ab26c2d8fe98f65

SHA1
784ea8e3528bfa287f51515eaeecd95807153075

SHA256
782c895981ad8261e7aa4bf7da15af922bb921e30f85b1e75af0171bbbf3ebbd

SHA512
62fa70f8b95e0ce45f26505873ec9a58ffc5c23339d1092698a48a39733ca9c1eb195990d1a134cc3027483ba4ddb07520bbb8860c99a4173dbc4d5cab15805e

Download Submit
C:\Users\Admin\AppData\Roaming\5Q6010RE\5Q6logim.jpeg
Filesize
46KB

MD5
33c9f5e461a03332a87b7b8f2dc1d0b0

SHA1
7fca5bb8f7977d7f6dbadb9e224c928d86a14d29

SHA256
d116e607363d08694235f37f83fbddc6313575510036e2ffaf2a47ee5df047af

SHA512
5b1cdcbc07e0dca4dde21790439414834894d4d4ff1cbbeebc6f4093a354e748ee0296c3022f93ffb920fb6a6c34b47867890715c6193386abd1a4c227fd66d1

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
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\szlo4t0f\CSC9D5F2A3BA4FF476AB787BC71262C7BD2.TMP
Filesize
1KB

MD5
7c25f6ea846875b181560dd86fde02ab

SHA1
90dd8459d317917432a6a2634babfc5fff1676c2

SHA256
07ffaf89b1af7ad2243ff2ca8d59d782fb869aa7d53f8e89e44421e6a4308ac1

SHA512
7d32d4d0d1d9216a37727ee090b89cabeef168a0983c08352bb786525eaaf36d0bc2d73013dbc735ef6ac8bffe1f5dddfe1a8f8aa35bc49c33f2e59aafc81314

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\szlo4t0f\szlo4t0f.0.cs
Filesize
2KB

MD5
4b7bccbd0e3c7ad0e35494793d17069b

SHA1
4f12101636084c28935313568518f1292caae7ff

SHA256
96cafa3320c3d870753c58b65fe3c05e2ffb343be959cfa316c4f6c34c4c60ea

SHA512
4409b49e687fcd14a0457e3b9b422a34efe5e4c04d807f7156cb8b4f215b4f07537d134d48a168b766fdffbff5106f41e09585fe1eab86dfa2e894a2bf477de2

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\szlo4t0f\szlo4t0f.cmdline
Filesize
248B

MD5
5dd5b2f8427b0daa9590aa63ecb138dc

SHA1
b9bffe098febdab86001000854207492124f12ea

SHA256
96ecb6bf5a87e48db4e612928453316526b23d455462fee02961205540bacb46

SHA512
05164935e5fddeca6fccba240f8eee139397046601c733798224bab6fa0161088e59f282de04c66b4c3704f2ef5515e1d8aed3ca7eefd0fe5c35a038a84d6e93

Download Submit
memory/584-79-0x0000000000000000-mapping.dmp

Download
memory/692-80-0x0000000000A40000-0x0000000000A49000-memory.dmp

Filesize
36KB

Download
memory/692-77-0x0000000000000000-mapping.dmp

Download
memory/692-86-0x00000000000E0000-0x000000000010A000-memory.dmp

Filesize
168KB

Download
memory/692-83-0x0000000000940000-0x00000000009D3000-memory.dmp

Filesize
588KB

Download
memory/692-82-0x00000000021F0000-0x00000000024F3000-memory.dmp

Filesize
3.0MB

Download
memory/692-81-0x00000000000E0000-0x000000000010A000-memory.dmp

Filesize
168KB

Download
memory/1280-87-0x00000000071D0000-0x000000000735D000-memory.dmp

Filesize
1.6MB

Download
memory/1280-85-0x0000000006AE0000-0x0000000006C6F000-memory.dmp

Filesize
1.6MB

Download
memory/1280-84-0x00000000071D0000-0x000000000735D000-memory.dmp

Filesize
1.6MB

Download
memory/1280-76-0x0000000006AE0000-0x0000000006C6F000-memory.dmp

Filesize
1.6MB

Download
memory/1800-72-0x000000000041B5F0-mapping.dmp

Download
memory/1800-69-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1800-68-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1800-75-0x00000000002D0000-0x00000000002E4000-memory.dmp

Filesize
80KB

Download
memory/1800-78-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1800-74-0x0000000000930000-0x0000000000C33000-memory.dmp

Filesize
3.0MB

Download
memory/1896-54-0x0000000000FC0000-0x0000000000FFC000-memory.dmp

Filesize
240KB

Download
memory/1896-65-0x0000000000590000-0x000000000059C000-memory.dmp

Filesize
48KB

Download
memory/1896-64-0x00000000009F0000-0x0000000000A2A000-memory.dmp

Filesize
232KB

Download
memory/1896-67-0x0000000000BD0000-0x0000000000BFA000-memory.dmp

Filesize
168KB

Download
memory/1896-66-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

Filesize
8KB

Download
memory/1896-63-0x00000000002F0000-0x00000000002F8000-memory.dmp

Filesize
32KB

Download
memory/1984-55-0x0000000000000000-mapping.dmp

Download
memory/2028-58-0x0000000000000000-mapping.dmp

Download