239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc

General

Target

239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe
Size

740KB
MD5

af0581cc9f5d885911af35789f7d7fae
SHA1

f02bb8043c3a5fce7a15798af18b5fa8a2192ecd
SHA256

239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc
SHA512

e058664567dc37379c3bcc165cc0c43303e139462ede0d54858ae24476ad0fda8454b635ba4053dcdabdf4f7c0f5fac416add6b8f10755e4834650236380698f
SSDEEP

12288:Vsp8fcP7cG9CZmSqKd89MP70IKV07HSo+qyQAO9IJLY3CZ/f:i8qbfwd8WP4bVgHSo+qLd92LFn

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\igytecot = "\"C:\\Windows\\yqecupil.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe

description	pid	process	target process
PID 4896 set thread context of 4028	4896	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe
PID 4028 set thread context of 2252	4028	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

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

884 vssadmin.exe

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

pid	process
884	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-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 5084 vssvc.exe
Token: SeRestorePrivilege 5084 vssvc.exe
Token: SeAuditPrivilege 5084 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	5084	vssvc.exe
Token: SeRestorePrivilege	5084	vssvc.exe
Token: SeAuditPrivilege	5084	vssvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exeexplorer.exe

description	pid	process	target process
PID 4896 wrote to memory of 4028	4896	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe
PID 4896 wrote to memory of 4028	4896	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe
PID 4896 wrote to memory of 4028	4896	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe
PID 4896 wrote to memory of 4028	4896	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe
PID 4896 wrote to memory of 4028	4896	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe
PID 4028 wrote to memory of 2252	4028	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe	explorer.exe
PID 4028 wrote to memory of 2252	4028	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe	explorer.exe
PID 4028 wrote to memory of 2252	4028	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe	explorer.exe
PID 4028 wrote to memory of 2252	4028	239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe	explorer.exe
PID 2252 wrote to memory of 884	2252	explorer.exe	vssadmin.exe
PID 2252 wrote to memory of 884	2252	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe
"C:\Users\Admin\AppData\Local\Temp\239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4896

C:\Users\Admin\AppData\Local\Temp\239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe
"C:\Users\Admin\AppData\Local\Temp\239f1c7708f8d05c6860008b982bb446c5d54dc917c9dea2b6ae78589e072afc.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4028

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:2252

C:\Windows\SYSTEM32\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
4⤵
- Interacts with shadow copies
PID:884

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5084

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\idumewitynofyran\01000000
Filesize
740KB

MD5
261d781551cbc31b3161a145bd936d93

SHA1
daf867d5061db9ddf058c354dc17154544b6040c

SHA256
615e0d5c9b4ec289dfc2e6659e845c9a3ecca0013036d5f75ec05b81ba7d0fb3

SHA512
fa82ca8bf54e4eac864a78340648bc4259c846c18b00952691c2b2a1a154bf6c08dcd5ae48b00a21daeadc7f1da8e1a9791dc8c71f4ef76399969fb95e77fd40

Download Submit
memory/884-143-0x0000000000000000-mapping.dmp

Download
memory/2252-137-0x0000000000000000-mapping.dmp

Download
memory/2252-138-0x00000000007A0000-0x00000000007DC000-memory.dmp

Filesize
240KB

Download
memory/2252-144-0x00000000007A0000-0x00000000007DC000-memory.dmp

Filesize
240KB

Download
memory/4028-132-0x0000000000000000-mapping.dmp

Download
memory/4028-133-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4028-135-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4028-136-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4028-140-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4028-142-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4896-134-0x0000000002220000-0x0000000002228000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads