6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f

General

Target

6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe
Size

15KB
MD5

810f7433368f527d10cb141a87cd836e
SHA1

efb2c92d1608122d8593161bbe6f6513333dd26d
SHA256

6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f
SHA512

505daea0dd5150e8ccbf7f757d842680502b2c782bcb1fdcfa1ac7e1c5209c3ccb11ab41ce3dca9b3cf843929686ec96eb67f6402668b4749e6632ca4b8e4cdf
SSDEEP

384:IO3qdXlIQV0YXd45xuYiMcRWnPbeVGWLwbbbGxxxx7:IO3EVdV0YXd4DuicNV3X

Score

9^/10

evasion upx

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1400-6-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2688-7-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2688-10-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2688-13-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2688-16-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2688-19-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

UPX dump on OEP (original entry point) 8 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1400-0-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
C:\Windows\Debug\jaohost.exe	UPX
behavioral1/memory/1400-6-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/2688-7-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/2688-10-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/2688-13-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/2688-16-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/2688-19-0x0000000000400000-0x0000000000414000-memory.dmp	UPX

Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

2416 attrib.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2536 cmd.exe
Executes dropped EXE 1 IoCs

Processes:

jaohost.exe

pid process

2688 jaohost.exe

pid	process
2416	attrib.exe

pid	process
2536	cmd.exe

pid	process
2688	jaohost.exe

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1400-0-0x0000000000400000-0x0000000000414000-memory.dmp	upx
C:\Windows\Debug\jaohost.exe	upx
behavioral1/memory/1400-6-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2688-7-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2688-10-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2688-13-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2688-16-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2688-19-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

Processes:

6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exeattrib.exe

description	ioc	process
File created	C:\Windows\Debug\jaohost.exe	6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe
File opened for modification	C:\Windows\Debug\jaohost.exe	6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe
File opened for modification	C:\Windows\Debug\jaohost.exe	attrib.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe

description pid process

Token: SeIncBasePriorityPrivilege 1400 6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	1400	6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe

description	pid	process	target process
PID 1400 wrote to memory of 2416	1400	6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe	attrib.exe
PID 1400 wrote to memory of 2416	1400	6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe	attrib.exe
PID 1400 wrote to memory of 2416	1400	6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe	attrib.exe
PID 1400 wrote to memory of 2416	1400	6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe	attrib.exe
PID 1400 wrote to memory of 2536	1400	6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe	cmd.exe
PID 1400 wrote to memory of 2536	1400	6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe	cmd.exe
PID 1400 wrote to memory of 2536	1400	6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe	cmd.exe
PID 1400 wrote to memory of 2536	1400	6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe	cmd.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

2416 attrib.exe

pid	process
2416	attrib.exe

C:\Users\Admin\AppData\Local\Temp\6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe
"C:\Users\Admin\AppData\Local\Temp\6b7db5fad0a46c51497bdcf5c015504c50d735a169d385df1e5d6e6ca3b92a8f.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\jaohost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:2416
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\6B7DB5~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2536

C:\Windows\Debug\jaohost.exe
C:\Windows\Debug\jaohost.exe
1⤵
- Executes dropped EXE
PID:2688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Debug\jaohost.exe

Filesize
15KB

MD5
4e68b664153f60fb4252952ffe01a6a6

SHA1
e1fa3135169120c0fdbaa368e99d59c2404e8aea

SHA256
89ac8395d4f88f55c0672320241739a114600841c330e0cbc2826dcc3759ac65

SHA512
c232ed52703ec92618add0b7d25fd3b6e5b31e76172c6c18a37c7fa4624dfe35ceba48aa39e1454882bdbd400b72e3d72931c172d7768241f99cc01a9e3b8fa7

Download Submit
memory/1400-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1400-6-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-7-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-10-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-13-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-16-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-19-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads