formbook | 4b376277cce9c1e365afb51b78046354176a443b45bb6bc123a3ea69710c6c65

General

Target

Factura de proforma pdf.exe
Size

1.0MB
MD5

a9c36956e677bc83e033e20aba4f55f1
SHA1

94cfebd8cf0eedaa9338e20bf9879fef1198ee8f
SHA256

4b376277cce9c1e365afb51b78046354176a443b45bb6bc123a3ea69710c6c65
SHA512

2eff71db4ca0361799a2839a93ceab4ee7736c87fb1109a74e8da8974d8117d3e9634ac02d51a88542bddb4ed10d445cc27815701884eecd1e8f58a3ae684be4

Score

10^/10

formbook n7ak persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

n7ak

C2

http://www.kmresults.com/n7ak/

Decoy

modischoolcbse.com

theneverwinter.com

rszkjx-vps-hosting.website

fnihil.com

1pbet.com

nnowzscorrez.com

uaotgvjl.icu

starmapsqatar.com

ekisilani.com

extradeepsheets.com

jam-nins.com

buranly.com

orixentertainment.com

rawtech.energy

myol.guru

utex.club

jiapie.com

wowig.store

wweidlyyl.com

systaskautomation.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/4212-120-0x0000000000000000-mapping.dmp	formbook
behavioral2/memory/4212-122-0x0000000072480000-0x00000000724AE000-memory.dmp	formbook
behavioral2/memory/4424-130-0x0000000002BD0000-0x0000000002BFE000-memory.dmp	formbook

Executes dropped EXE 1 IoCs

Processes:

-zi0anzdhdlnn.exe

pid process

1868 -zi0anzdhdlnn.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

pid	process
1868	-zi0anzdhdlnn.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cmd.exeFactura de proforma pdf.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ZXEDYHTXJJ = "C:\\Program Files (x86)\\Ksxo\\-zi0anzdhdlnn.exe"	cmd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mwltktvz = "C:\\Users\\Public\\Libraries\\Mwltktvz\\zvtktlwM.url"	Factura de proforma pdf.exe
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	cmd.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

logagent.execmd.exe

description	pid	process	target process
PID 4212 set thread context of 2060	4212	logagent.exe	Explorer.EXE
PID 4424 set thread context of 2060	4424	cmd.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

cmd.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ksxo\-zi0anzdhdlnn.exe	cmd.exe
File opened for modification	C:\Program Files (x86)\Ksxo	Explorer.EXE
File created	C:\Program Files (x86)\Ksxo\-zi0anzdhdlnn.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Ksxo\-zi0anzdhdlnn.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmd.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1042495040-510797905-2613508344-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmd.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

logagent.execmd.exe

pid	process
4212	logagent.exe
4212	logagent.exe
4212	logagent.exe
4212	logagent.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe
4424	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2060 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

logagent.execmd.exe

pid process

4212 logagent.exe
4212 logagent.exe
4212 logagent.exe
4424 cmd.exe
4424 cmd.exe
4424 cmd.exe
4424 cmd.exe

pid	process
2060	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 18 IoCs

Processes:

logagent.execmd.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4212	logagent.exe
Token: SeDebugPrivilege	4424	cmd.exe
Token: SeShutdownPrivilege	2060	Explorer.EXE
Token: SeCreatePagefilePrivilege	2060	Explorer.EXE
Token: SeShutdownPrivilege	2060	Explorer.EXE
Token: SeCreatePagefilePrivilege	2060	Explorer.EXE
Token: SeShutdownPrivilege	2060	Explorer.EXE
Token: SeCreatePagefilePrivilege	2060	Explorer.EXE
Token: SeShutdownPrivilege	2060	Explorer.EXE
Token: SeCreatePagefilePrivilege	2060	Explorer.EXE
Token: SeShutdownPrivilege	2060	Explorer.EXE
Token: SeCreatePagefilePrivilege	2060	Explorer.EXE
Token: SeShutdownPrivilege	2060	Explorer.EXE
Token: SeCreatePagefilePrivilege	2060	Explorer.EXE
Token: SeShutdownPrivilege	2060	Explorer.EXE
Token: SeCreatePagefilePrivilege	2060	Explorer.EXE
Token: SeShutdownPrivilege	2060	Explorer.EXE
Token: SeCreatePagefilePrivilege	2060	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Factura de proforma pdf.exeExplorer.EXEcmd.exe

description	pid	process	target process
PID 3628 wrote to memory of 4212	3628	Factura de proforma pdf.exe	logagent.exe
PID 3628 wrote to memory of 4212	3628	Factura de proforma pdf.exe	logagent.exe
PID 3628 wrote to memory of 4212	3628	Factura de proforma pdf.exe	logagent.exe
PID 3628 wrote to memory of 4212	3628	Factura de proforma pdf.exe	logagent.exe
PID 3628 wrote to memory of 4212	3628	Factura de proforma pdf.exe	logagent.exe
PID 3628 wrote to memory of 4212	3628	Factura de proforma pdf.exe	logagent.exe
PID 2060 wrote to memory of 4424	2060	Explorer.EXE	cmd.exe
PID 2060 wrote to memory of 4424	2060	Explorer.EXE	cmd.exe
PID 2060 wrote to memory of 4424	2060	Explorer.EXE	cmd.exe
PID 4424 wrote to memory of 4464	4424	cmd.exe	cmd.exe
PID 4424 wrote to memory of 4464	4424	cmd.exe	cmd.exe
PID 4424 wrote to memory of 4464	4424	cmd.exe	cmd.exe
PID 4424 wrote to memory of 1324	4424	cmd.exe	cmd.exe
PID 4424 wrote to memory of 1324	4424	cmd.exe	cmd.exe
PID 4424 wrote to memory of 1324	4424	cmd.exe	cmd.exe
PID 4424 wrote to memory of 1612	4424	cmd.exe	Firefox.exe
PID 4424 wrote to memory of 1612	4424	cmd.exe	Firefox.exe
PID 4424 wrote to memory of 1612	4424	cmd.exe	Firefox.exe
PID 2060 wrote to memory of 1868	2060	Explorer.EXE	-zi0anzdhdlnn.exe
PID 2060 wrote to memory of 1868	2060	Explorer.EXE	-zi0anzdhdlnn.exe
PID 2060 wrote to memory of 1868	2060	Explorer.EXE	-zi0anzdhdlnn.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2060

C:\Users\Admin\AppData\Local\Temp\Factura de proforma pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Factura de proforma pdf.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3628

C:\Windows\SysWOW64\logagent.exe
C:\Windows\System32\logagent.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4212

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\SysWOW64\cmd.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4424

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\logagent.exe"
3⤵
PID:4464

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:1324

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1612

C:\Program Files (x86)\Ksxo\-zi0anzdhdlnn.exe
"C:\Program Files (x86)\Ksxo\-zi0anzdhdlnn.exe"
2⤵
- Executes dropped EXE
PID:1868

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

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Ksxo\-zi0anzdhdlnn.exe
MD5
dc8b608c0eb0fc7e68fee82a0401abfe

SHA1
a98232b58b5e01aebcc0d0bd76b3a483c4033158

SHA256
e0e749d9b6f8685cbdff6b57469c84768f1791292613a59a8ec497059812524c

SHA512
bf5f1130a1f8dcfdc55d0b1e72658c26ab5b13f3f0e4fd29cce2561e02e29fc7c2bfb0ce9843024c98913819560abf6c5825fff5ed222462fb00d06e8a430e53

Download Submit
C:\Program Files (x86)\Ksxo\-zi0anzdhdlnn.exe
MD5
dc8b608c0eb0fc7e68fee82a0401abfe

SHA1
a98232b58b5e01aebcc0d0bd76b3a483c4033158

SHA256
e0e749d9b6f8685cbdff6b57469c84768f1791292613a59a8ec497059812524c

SHA512
bf5f1130a1f8dcfdc55d0b1e72658c26ab5b13f3f0e4fd29cce2561e02e29fc7c2bfb0ce9843024c98913819560abf6c5825fff5ed222462fb00d06e8a430e53

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Roaming\94O2R65S\94Ologim.jpeg
MD5
c99482dab46a5ef2846557d953068144

SHA1
f8910fc7bb7b50f0a33f6dc94f51579db8377686

SHA256
b1d9e303e54fe1ce84fb69111ea1b9661242a1c3c89c1cb52cace7d065fdc9d3

SHA512
7b5fe42a164163b4dc1bf196053a69a7e38f9b2e98d7d65d3b01d228f6a7b634016e09609b3ac39964b603b9927143bbd6794edb6099cd6050dd83c705f3c3e3

Download Submit
C:\Users\Admin\AppData\Roaming\94O2R65S\94Ologrf.ini
MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\94O2R65S\94Ologrg.ini
MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\94O2R65S\94Ologri.ini
MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\94O2R65S\94Ologrv.ini
MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/1324-134-0x0000000000000000-mapping.dmp

Download
memory/1868-141-0x0000000000000000-mapping.dmp

Download
memory/2060-126-0x0000000002500000-0x00000000025FE000-memory.dmp

Filesize
1016KB

Download
memory/2060-133-0x0000000005D60000-0x0000000005E9B000-memory.dmp

Filesize
1.2MB

Download
memory/3628-118-0x00000000006C0000-0x00000000006C1000-memory.dmp

Filesize
4KB

Download
memory/3628-119-0x0000000002361000-0x0000000002375000-memory.dmp

Filesize
80KB

Download
memory/4212-125-0x0000000000D30000-0x0000000000D97000-memory.dmp

Filesize
412KB

Download
memory/4212-123-0x0000000004400000-0x0000000004720000-memory.dmp

Filesize
3.1MB

Download
memory/4212-121-0x0000000000B60000-0x0000000000B61000-memory.dmp

Filesize
4KB

Download
memory/4212-122-0x0000000072480000-0x00000000724AE000-memory.dmp

Filesize
184KB

Download
memory/4212-120-0x0000000000000000-mapping.dmp

Download
memory/4424-132-0x0000000003440000-0x00000000034D3000-memory.dmp

Filesize
588KB

Download
memory/4424-131-0x0000000002E00000-0x0000000002F4A000-memory.dmp

Filesize
1.3MB

Download
memory/4424-130-0x0000000002BD0000-0x0000000002BFE000-memory.dmp

Filesize
184KB

Download
memory/4424-129-0x0000000000100000-0x0000000000159000-memory.dmp

Filesize
356KB

Download
memory/4424-127-0x0000000000000000-mapping.dmp

Download
memory/4464-128-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads