bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:27

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General

Target

bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b.exe
Size

86KB
MD5

1ee0d574da4cf7b4315913a308297dbc
SHA1

299e1cc83640133ec0b8c2247d1a98b67ef54c1c
SHA256

bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b
SHA512

500d192df8411c5d34c8154cf614c57c3d52457030271311d8877e3a42925065085826b2dacbff21d7b01693e3d84df0b28e421896f859f2966c259f04513de0
SSDEEP

1536:/Ao0+j2d6rnJqlIUSJn3m2GnNCyuaMeFg8kVQ+SvMupWsZZZNF01Lryhv1g1s1Ek:/AoVl4lXin3m2GnNCyuaMeFg8kVQ+SvT

Score

7^/10

persistence

Malware Config

Signatures

Deletes itself 1 IoCs

Processes:

microsofthelp.exe

pid process

2400 microsofthelp.exe
Executes dropped EXE 1 IoCs

Processes:

microsofthelp.exe

pid process

2400 microsofthelp.exe

pid	process
2400	microsofthelp.exe

pid	process
2400	microsofthelp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b.exe

Drops file in Windows directory 2 IoCs

Processes:

bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b.exemicrosofthelp.exe

description	ioc	process
File created	C:\Windows\microsofthelp.exe	bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b.exe
File created	C:\Windows\HidePlugin.dll	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b.exe

description	pid	process	target process
PID 1616 wrote to memory of 2400	1616	bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b.exe	microsofthelp.exe
PID 1616 wrote to memory of 2400	1616	bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b.exe	microsofthelp.exe
PID 1616 wrote to memory of 2400	1616	bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b.exe	microsofthelp.exe

C:\Users\Admin\AppData\Local\Temp\bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b.exe
"C:\Users\Admin\AppData\Local\Temp\bc9aedd26e9a871577f4e2553f11417fa229e24b440275e77f76e4cb66af242b.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1616

C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
2⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Windows directory
PID:2400

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Windows\microsofthelp.exe
Filesize
86KB

MD5
bdf5580ecf1e3d420285562f6fa01be9

SHA1
d1c3b7993979b02c047e53fea361fece8f90dec7

SHA256
a4a4ff86a1f86671149898cdd5384fa3c8886b148d4966105f89dc08eddecf3c

SHA512
57a85b163e4efd696046529a5180a7d4d5f746d33a2e6ca2762a19d0e0f54ab0e2c2e2a531246ebb8099dd5de8d86f8955700fb1aabf70f8853aad3ff7e6e56e

Download Submit
memory/1616-0-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2400-4-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download