dfb6a42dab45fdb3b7d3e0a5951089a40a0151ba89aac9b23ab78b4b2196c495

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
24/07/2024, 02:27

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General

Target

3a98f49098a5bfbfada3220944312a30N.exe
Size

63KB
MD5

3a98f49098a5bfbfada3220944312a30
SHA1

186ccb1e83a6a9f7085f25c0dbee520bb3c3f59f
SHA256

dfb6a42dab45fdb3b7d3e0a5951089a40a0151ba89aac9b23ab78b4b2196c495
SHA512

91531b1964cd25d8be86dd877f116eaa5af2673b890af3a61a67ad57cfb125fd508049895864606da6fc274fa79fcc2f5f2a38cae12f70ef7a7b43949fd8cd23
SSDEEP

1536:fvQoLHjw2iWPKMvw71oLyXQUUqnouy8YXuvooodwwwt111n:fv5Ls27BIJoLyXTUyoutYXCooodwwwth

Score

7^/10

defense_evasion discovery upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2720	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2212	jaohost.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2824-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/files/0x0007000000012119-3.dat	upx
behavioral1/memory/2212-4-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/memory/2824-5-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral1/memory/2212-6-0x0000000000400000-0x000000000040F000-memory.dmp	upx

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\jaohost.exe	3a98f49098a5bfbfada3220944312a30N.exe
File opened for modification	C:\Windows\Debug\jaohost.exe	3a98f49098a5bfbfada3220944312a30N.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a98f49098a5bfbfada3220944312a30N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaohost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	jaohost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	jaohost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2824	3a98f49098a5bfbfada3220944312a30N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2824 wrote to memory of 2720	2824	3a98f49098a5bfbfada3220944312a30N.exe	31
PID 2824 wrote to memory of 2720	2824	3a98f49098a5bfbfada3220944312a30N.exe	31
PID 2824 wrote to memory of 2720	2824	3a98f49098a5bfbfada3220944312a30N.exe	31
PID 2824 wrote to memory of 2720	2824	3a98f49098a5bfbfada3220944312a30N.exe	31

C:\Users\Admin\AppData\Local\Temp\3a98f49098a5bfbfada3220944312a30N.exe
"C:\Users\Admin\AppData\Local\Temp\3a98f49098a5bfbfada3220944312a30N.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2824
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\3A98F4~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2720

C:\Windows\Debug\jaohost.exe
C:\Windows\Debug\jaohost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2212

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\debug\jaohost.exe

Filesize
63KB

MD5
1ec34b4fe9a15da33b2fd287a5a888f5

SHA1
6f89bf34aded990ff856bb53aa80cbf5e4f3d18b

SHA256
79df50a360383ea2c09b37b3517f82332d6dcf806ddffcc190ed081bf6b9075f

SHA512
ca21d8c0bc44c405ffe93b28c7bec6067f7e1430709c04a8620e42efbd572879147325667d1c97a1ef406291d66e03c97e42ea5cd78f12518ce4ee4bbfd948b1

Download Submit
memory/2212-4-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2212-6-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2824-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2824-5-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download