fakeav | d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2

Analysis

max time kernel
48s
max time network
52s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
05-12-2022 04:24

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General

Target

d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe
Size

755KB
MD5

e26b09ee4ca95265e776308d46514ac0
SHA1

3752b4da16915596c30270252fe84ed69e861742
SHA256

d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2
SHA512

e352d2cd5d36a36f99f4a35102d30d8ff845555afe32bc6c4fb8a3743f44cf773ac6a980dbd22648222ec27ab70bcad70464effaac95f3a5a3f7a3b89e0c6d96
SSDEEP

12288:xoxejOONAM7GUC1Jr+4o628gx2Jw+tP3Jzm8JO6GXCJdw/oX+pd167QhEQO:2xY3NtGUmJr+4Obxd+tPZSZT/oE6EhE

Score

10^/10

fakeav fakeav persistence spyware upx

Malware Config

Signatures

FakeAV, RogueAntivirus
FakeAV or Rogue AntiVirus is a class of malware that displays false alert messages.
fakeav spyware fakeav

Executes dropped EXE 1 IoCs

pid	Process
632	KeyGen.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00070000000142c0-56.dat	upx
behavioral1/memory/1544-57-0x0000000002130000-0x000000000214F000-memory.dmp	upx
behavioral1/memory/632-59-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/632-60-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CSRLT.EXE = "C:\\Windows\\system32\\CSRLT.EXE"	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\MSBLT.EXE = "C:\\Windows\\MSBLT.EXE"	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\CSRLT.EXE	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe
File opened for modification	C:\Windows\SysWOW64\CSRLT.EXE	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\MSBLT.EXE	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe
File opened for modification	C:\Windows\MSBLT.EXE	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe
File created	C:\Windows\KeyGen.exe	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
632	KeyGen.exe
632	KeyGen.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 632	1544	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe	26
PID 1544 wrote to memory of 632	1544	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe	26
PID 1544 wrote to memory of 632	1544	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe	26
PID 1544 wrote to memory of 632	1544	d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe	26

C:\Users\Admin\AppData\Local\Temp\d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe
"C:\Users\Admin\AppData\Local\Temp\d7320e363540732ea351c2f94c8a345823ae78a4eb23655b1d09af8f725906c2.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Windows\KeyGen.exe
  "C:\Windows\KeyGen.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:632

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\KeyGen.exe

Filesize
52KB

MD5
e3c7d489013b51c671aa79c9068a2a00

SHA1
deed13e52afcc9fd2ef326fb6b0aa4bf7fcf14be

SHA256
5ea232ac5ebca4584f8689d5a1ed466404272a5c5496f41934537504368b5da2

SHA512
18a31ffcc796d6352142374dc0e12d83b9b46d56069a5db26a38b0f6a133302f13d7064bfe9bc16e7a705aeeb2cec2d654863d92280a6085c8202a3c8096b240

Download Submit
memory/632-59-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/632-60-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1544-54-0x0000000075681000-0x0000000075683000-memory.dmp

Filesize
8KB

Download
memory/1544-57-0x0000000002130000-0x000000000214F000-memory.dmp

Filesize
124KB

Download
memory/1544-58-0x0000000002130000-0x000000000214F000-memory.dmp

Filesize
124KB

Download