29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088

General

Target

29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe
Size

134KB
MD5

530a0782e996da37958f7ce8fa3f4190
SHA1

1282ddea03a8b2e00295f7ee5afd22cd1abb1608
SHA256

29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088
SHA512

bdd23c2d10efaeb9759ca8e4a102904727d4ee3e77ead68a25256d972ba7d9748c3fe2bae2fc59b5c028a0d78b1f0db159f35c5ea99c699687d3d4db4323375f
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOL:YfU/WF6QMauSuiWNi9eNOl0007NZIOL

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe

Executes dropped EXE 1 IoCs

pid	Process
4920	wuauclt.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\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run"	29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe

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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1668-0-0x0000000000F20000-0x0000000000F48000-memory.dmp	upx
behavioral2/memory/4920-4-0x0000000000030000-0x0000000000058000-memory.dmp	upx
behavioral2/files/0x0008000000023475-3.dat	upx
behavioral2/memory/1668-6-0x0000000000F20000-0x0000000000F48000-memory.dmp	upx
behavioral2/memory/4920-7-0x0000000000030000-0x0000000000058000-memory.dmp	upx
behavioral2/memory/1668-8-0x0000000000F20000-0x0000000000F48000-memory.dmp	upx

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuauclt.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 4920	1668	29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe	85
PID 1668 wrote to memory of 4920	1668	29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe	85
PID 1668 wrote to memory of 4920	1668	29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe	85
PID 1668 wrote to memory of 3172	1668	29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe	94
PID 1668 wrote to memory of 3172	1668	29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe	94
PID 1668 wrote to memory of 3172	1668	29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe	94

C:\Users\Admin\AppData\Local\Temp\29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe
"C:\Users\Admin\AppData\Local\Temp\29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1668
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4920
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\29ae9a0bb7112c12818c54d4950f27ffd021354baa3350f1a88807179d582088N.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3172

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

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Indicator Removal

1

T1070

File Deletion

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Update\wuauclt.exe

Filesize
134KB

MD5
20a9ea50873159c5fc2f3c234fd7b4ed

SHA1
0686a869e667df3a7e3405e7ef95b4cbcaa94257

SHA256
b8fae5eb9757d7e5e5df84dd8cb9dce27c7bedaa890aea6e078f6b51175c35f6

SHA512
1290a1250004f222170be393414b1553fff24532d13f3dd36e01214c1ece02e709a89c1e46e0f67fcef35de172a3e7aaf78ecdb47bbde12046171c02f0ed5187

Download Submit
memory/1668-0-0x0000000000F20000-0x0000000000F48000-memory.dmp

Filesize
160KB

Download
memory/1668-6-0x0000000000F20000-0x0000000000F48000-memory.dmp

Filesize
160KB

Download
memory/1668-8-0x0000000000F20000-0x0000000000F48000-memory.dmp

Filesize
160KB

Download
memory/4920-4-0x0000000000030000-0x0000000000058000-memory.dmp

Filesize
160KB

Download
memory/4920-7-0x0000000000030000-0x0000000000058000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads