713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea

General

Target

713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe
Size

739KB
MD5

4672c11098866a580e6c893d4a58cf67
SHA1

9bb461e25e7e45e17377c6a88c8dd0c9bbd699e7
SHA256

713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea
SHA512

a89055eabe000322a7022c27bf95e9582c01a50c1201731d8c583ecdad91cc4b78748fd95389b26408abf22e071c1d6256f7db63a47eb3ebafbd544e589ea798
SSDEEP

12288:5sp8fcP7cG9CZmSqKd89MP7BIKVfEf0HSo+/xC0v3e/ki:e8qbfwd8WPlbV60HSo+/x9e/ki

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\ehkturoh = "\"C:\\Windows\\uguwysyb.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe

description	pid	process	target process
PID 1588 set thread context of 1204	1588	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe
PID 1204 set thread context of 1232	1204	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

File opened for modification C:\Windows\uguwysyb.exe explorer.exe
File created C:\Windows\uguwysyb.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

2000 vssadmin.exe

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

pid	process
2000	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 688 vssvc.exe
Token: SeRestorePrivilege 688 vssvc.exe
Token: SeAuditPrivilege 688 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	688	vssvc.exe
Token: SeRestorePrivilege	688	vssvc.exe
Token: SeAuditPrivilege	688	vssvc.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exeexplorer.exe

description	pid	process	target process
PID 1588 wrote to memory of 1204	1588	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe
PID 1588 wrote to memory of 1204	1588	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe
PID 1588 wrote to memory of 1204	1588	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe
PID 1588 wrote to memory of 1204	1588	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe
PID 1588 wrote to memory of 1204	1588	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe
PID 1588 wrote to memory of 1204	1588	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe
PID 1204 wrote to memory of 1232	1204	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	explorer.exe
PID 1204 wrote to memory of 1232	1204	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	explorer.exe
PID 1204 wrote to memory of 1232	1204	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	explorer.exe
PID 1204 wrote to memory of 1232	1204	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	explorer.exe
PID 1204 wrote to memory of 1232	1204	713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe	explorer.exe
PID 1232 wrote to memory of 2000	1232	explorer.exe	vssadmin.exe
PID 1232 wrote to memory of 2000	1232	explorer.exe	vssadmin.exe
PID 1232 wrote to memory of 2000	1232	explorer.exe	vssadmin.exe
PID 1232 wrote to memory of 2000	1232	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe
"C:\Users\Admin\AppData\Local\Temp\713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1588

C:\Users\Admin\AppData\Local\Temp\713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe
"C:\Users\Admin\AppData\Local\Temp\713a40b65196c410d81dfc1f3a25e23e6f6c96feda41fe81bbc78e7385e3d5ea.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1204

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:1232

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
4⤵
- Interacts with shadow copies
PID:2000

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:688

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

Replay Monitor

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Downloads

C:\ProgramData\idumewitynofyran\01000000
Filesize
739KB

MD5
8a39f6f9fbabfb26a29a39f390cdf225

SHA1
b67780f49cdfb8f25f5dc2750390c5c333c8913d

SHA256
e1df0226082cb570a7725049fabf367d48eb834b1f3ee4b053cef3baec0c08cd

SHA512
84f194067bce3e7e6eefc11e69142b5e7c3075851bb051d50c43df16a1d313ab8f3d93ac29b90891d8a114165cd2fa6136b5aa9721567c42e1e27dd307723f0d

Download Submit
memory/1204-71-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1204-56-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1204-59-0x000000000040A61E-mapping.dmp

Download
memory/1204-60-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1204-62-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1232-63-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/1232-65-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/1232-67-0x000000000009A140-mapping.dmp

Download
memory/1232-69-0x0000000074BF1000-0x0000000074BF3000-memory.dmp

Filesize
8KB

Download
memory/1232-72-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/1232-74-0x00000000726C1000-0x00000000726C3000-memory.dmp

Filesize
8KB

Download
memory/1588-54-0x0000000075661000-0x0000000075663000-memory.dmp

Filesize
8KB

Download
memory/1588-55-0x00000000002C0000-0x00000000002C8000-memory.dmp

Filesize
32KB

Download
memory/2000-73-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads