e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c

General

Target

e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
Size

773KB
MD5

48fc525c80aea2a073b4e16f4a98646b
SHA1

aac1555af284530a0072a0a4caa8e55231f35427
SHA256

e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c
SHA512

8baecb449ecb48431cd5cfaf4d3b5b22b4e4f13e4b0d98fef74fa8e3149c6c737214c23b21ff69290ac5bdc90f0905e221c9fe43d32b3cf378e057e807c8bd71
SSDEEP

24576:DI0sDNiUfiPgI91k4geYZF2HSoHvwA6PfRAcOsA0:Dq5iUU5nSeYiHSoH94fK0

Score

9^/10

evasion persistence ransomware trojan

Malware Config

Signatures

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\exyqqsir = "\"C:\\Windows\\ybuwutiq.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exee58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe

description	pid	process	target process
PID 1904 set thread context of 1744	1904	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1744 set thread context of 1772	1744	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

File opened for modification C:\Windows\ybuwutiq.exe explorer.exe
File created C:\Windows\ybuwutiq.exe explorer.exe
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exe

pid process

956 vssadmin.exe

description	ioc	process
File opened for modification	C:\Windows\ybuwutiq.exe	explorer.exe
File created	C:\Windows\ybuwutiq.exe	explorer.exe

pid	process
956	vssadmin.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1120 vssvc.exe
Token: SeRestorePrivilege 1120 vssvc.exe
Token: SeAuditPrivilege 1120 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	1120	vssvc.exe
Token: SeRestorePrivilege	1120	vssvc.exe
Token: SeAuditPrivilege	1120	vssvc.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exee58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exeexplorer.exe

description	pid	process	target process
PID 1904 wrote to memory of 1744	1904	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1904 wrote to memory of 1744	1904	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1904 wrote to memory of 1744	1904	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1904 wrote to memory of 1744	1904	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1904 wrote to memory of 1744	1904	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1904 wrote to memory of 1744	1904	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
PID 1744 wrote to memory of 1772	1744	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe
PID 1744 wrote to memory of 1772	1744	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe
PID 1744 wrote to memory of 1772	1744	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe
PID 1744 wrote to memory of 1772	1744	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe
PID 1744 wrote to memory of 1772	1744	e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe	explorer.exe
PID 1772 wrote to memory of 956	1772	explorer.exe	vssadmin.exe
PID 1772 wrote to memory of 956	1772	explorer.exe	vssadmin.exe
PID 1772 wrote to memory of 956	1772	explorer.exe	vssadmin.exe
PID 1772 wrote to memory of 956	1772	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
"C:\Users\Admin\AppData\Local\Temp\e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1904

C:\Users\Admin\AppData\Local\Temp\e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe
"C:\Users\Admin\AppData\Local\Temp\e58768c3df867270aa9e3177709415005914b39d272623e8d296106ad5cf125c.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1744

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\system32\explorer.exe"
3⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies Internet Explorer Phishing Filter
- Suspicious use of WriteProcessMemory
PID:1772

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
4⤵
- Interacts with shadow copies
PID:956

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1120

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

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Downloads

C:\ProgramData\adyxihodaryrujum\01000000
Filesize
773KB

MD5
b891fdbe73cd4f8f37b4af6fb7203658

SHA1
abc57e103af322654c1f43fa643548e070067c6b

SHA256
62221e46c59bece54c15b093c6f9043a7a7abcf05f0750538ae27ad4ccefea02

SHA512
72afa0855c27d17fb81acec8f556604ff22e9cb7eef97c2f1a2f86a046a7c18f895f15d5c35e8e04e31092017059eb61310807ace6da25f19b9988241172fdeb

Download Submit
memory/956-73-0x0000000000000000-mapping.dmp

Download
memory/1744-56-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1744-59-0x000000000040AD0A-mapping.dmp

Download
memory/1744-60-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1744-62-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1744-71-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1772-67-0x000000000009A540-mapping.dmp

Download
memory/1772-69-0x0000000075591000-0x0000000075593000-memory.dmp

Filesize
8KB

Download
memory/1772-65-0x0000000000080000-0x00000000000B8000-memory.dmp

Filesize
224KB

Download
memory/1772-63-0x0000000000080000-0x00000000000B8000-memory.dmp

Filesize
224KB

Download
memory/1772-72-0x0000000000080000-0x00000000000B8000-memory.dmp

Filesize
224KB

Download
memory/1772-74-0x0000000073041000-0x0000000073043000-memory.dmp

Filesize
8KB

Download
memory/1772-75-0x0000000000080000-0x00000000000B8000-memory.dmp

Filesize
224KB

Download
memory/1904-54-0x0000000076DC1000-0x0000000076DC3000-memory.dmp

Filesize
8KB

Download
memory/1904-55-0x0000000000240000-0x0000000000248000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads