68ff6814dafe9fd6bd25e9b4c2f35417d3b6574ae2fecd069163e1d4c65b5c73

General

Target

0002455510da982d0474ed8aaf5f7756_JC.exe
Size

420KB
MD5

0002455510da982d0474ed8aaf5f7756
SHA1

56c9d904830c86e6a830b88d5e3e254fc7c3fb76
SHA256

68ff6814dafe9fd6bd25e9b4c2f35417d3b6574ae2fecd069163e1d4c65b5c73
SHA512

a45cc05a91c1a3e57d584b5c8cd535fe65773be5e41d85659b0b28d2cc0c0475dfa16500ccbde1d41cebf394f1f07c92ec00816d7229571ffa04f3d49d5805c8
SSDEEP

6144:gdspDeDrxkg/vrMuJIgwhEFHyOrJcX/Pgqwzm5IzkWjS4e4azExBKO1t4Kb70Nqx:G8kxNhOZElO5kkWjhD4AF

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2780	OEMJMYI.EXE

Modifies system executable filetype association 2 TTPs 3 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	0002455510da982d0474ed8aaf5f7756_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Program Files (x86)\\YOESS.EXE \"%1\" %*"	0002455510da982d0474ed8aaf5f7756_JC.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	OEMJMYI.EXE

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\YOESS.EXE = "C:\\Program Files (x86)\\YOESS.EXE"	0002455510da982d0474ed8aaf5f7756_JC.exe

Enumerates connected drives 3 TTPs 17 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\L:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\N:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\Q:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\V:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\G:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\S:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\T:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\I:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\J:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\M:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\O:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\P:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\E:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\H:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\K:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\R:	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened (read-only)	\??\U:	0002455510da982d0474ed8aaf5f7756_JC.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\YOESS.EXE	0002455510da982d0474ed8aaf5f7756_JC.exe
File created	C:\Program Files (x86)\FZZIQ.EXE	0002455510da982d0474ed8aaf5f7756_JC.exe
File opened for modification	C:\Program Files (x86)\FZZIQ.EXE	0002455510da982d0474ed8aaf5f7756_JC.exe
File created	C:\Program Files (x86)\YOESS.EXE	0002455510da982d0474ed8aaf5f7756_JC.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\OEMJMYI.EXE	0002455510da982d0474ed8aaf5f7756_JC.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Program Files (x86)\\FZZIQ.EXE %1"	0002455510da982d0474ed8aaf5f7756_JC.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file	0002455510da982d0474ed8aaf5f7756_JC.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open\command	0002455510da982d0474ed8aaf5f7756_JC.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command	0002455510da982d0474ed8aaf5f7756_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "C:\\$Recycle.Bin\\MLD.EXE \"%1\""	0002455510da982d0474ed8aaf5f7756_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Program Files (x86)\\YOESS.EXE \"%1\" %*"	0002455510da982d0474ed8aaf5f7756_JC.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	OEMJMYI.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open	0002455510da982d0474ed8aaf5f7756_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command\ = "C:\\$Recycle.Bin\\MLD.EXE \"%1\""	0002455510da982d0474ed8aaf5f7756_JC.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command	0002455510da982d0474ed8aaf5f7756_JC.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	0002455510da982d0474ed8aaf5f7756_JC.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command	0002455510da982d0474ed8aaf5f7756_JC.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell	0002455510da982d0474ed8aaf5f7756_JC.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command	0002455510da982d0474ed8aaf5f7756_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command\ = "C:\\Program Files (x86)\\YOESS.EXE %1"	0002455510da982d0474ed8aaf5f7756_JC.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2780	OEMJMYI.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1816 wrote to memory of 2780	1816	0002455510da982d0474ed8aaf5f7756_JC.exe	28
PID 1816 wrote to memory of 2780	1816	0002455510da982d0474ed8aaf5f7756_JC.exe	28
PID 1816 wrote to memory of 2780	1816	0002455510da982d0474ed8aaf5f7756_JC.exe	28
PID 1816 wrote to memory of 2780	1816	0002455510da982d0474ed8aaf5f7756_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\0002455510da982d0474ed8aaf5f7756_JC.exe
"C:\Users\Admin\AppData\Local\Temp\0002455510da982d0474ed8aaf5f7756_JC.exe"
1⤵
- Modifies system executable filetype association
- Adds Run key to start application
- Enumerates connected drives
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1816
- C:\Windows\OEMJMYI.EXE
  C:\Windows\OEMJMYI.EXE
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\$Recycle.Bin\MLD.EXE

Filesize
421KB

MD5
3336f45b8e83c19830be42f6c1884928

SHA1
7411d972b33573f1f8f185e1b38740915a779b4f

SHA256
fb6cf6663d40875f16f4e85a62f66274835a93e9c85b8230e7bc58a07f19b5e0

SHA512
ad5e70e2aba241d9cabcaeccd58d62eb1861653b1dbd03de32ed1e995deaa18688d9d3d105b74e2f7fe377f454f164ee15424836266cbb97bb24af9d3afd500a

Download Submit
C:\Windows\OEMJMYI.EXE

Filesize
421KB

MD5
1134189dd71faf42358f54abc664a01d

SHA1
5970008aaa0a52abe7514c6154789ca5e4cf1538

SHA256
e67ed284d73b88f398d3e48963e5962903423609672cf141d27024dc213fbf5b

SHA512
02a4c5342ecfdcd909793aae22dd1fa978d16cd9b7b3538a73695c35f79cc9f60410baf10e613d2c2c8e1e4a72885a27564e8a53125a6cdbbb08e7a45c520a89

Download Submit
memory/1816-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2780-24-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2780-25-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads