ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e

General

Target

ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e.exe
Size

519KB
MD5

525f1adc261eeb1bba5366b5d1ee905c
SHA1

812a785e0a5c8c0ed54c8a82c42240d00005aee6
SHA256

ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e
SHA512

f9280c974703b0176847c697b77e60c3603662226375c56a5142a2d24dca74aae8b8385c26cd3bfc22580150a5cf268d584c7c696bf2dd1c1058db10050edad8
SSDEEP

12288:jbQg8276OuF2qLSt3+Ofr+aD991RpvknDhDI2JCU77Uu:jbQg827TuF22SJzfygX1RpsDI2AU7v

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4924	Lock.exe
2224	²¹¶¡3.exe

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Deleteme.bat	²¹¶¡3.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2224 set thread context of 916	2224	²¹¶¡3.exe	84

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 18 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{7FF31EFF-7973-11ED-B696-D2D0017C8629} = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "377542246"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
916	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
916	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
4924	Lock.exe
4924	Lock.exe
916	IEXPLORE.EXE
916	IEXPLORE.EXE
1088	IEXPLORE.EXE
1088	IEXPLORE.EXE
1088	IEXPLORE.EXE
1088	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4856 wrote to memory of 4924	4856	ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e.exe	82
PID 4856 wrote to memory of 4924	4856	ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e.exe	82
PID 4856 wrote to memory of 4924	4856	ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e.exe	82
PID 4856 wrote to memory of 2224	4856	ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e.exe	83
PID 4856 wrote to memory of 2224	4856	ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e.exe	83
PID 4856 wrote to memory of 2224	4856	ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e.exe	83
PID 2224 wrote to memory of 916	2224	²¹¶¡3.exe	84
PID 2224 wrote to memory of 916	2224	²¹¶¡3.exe	84
PID 2224 wrote to memory of 916	2224	²¹¶¡3.exe	84
PID 2224 wrote to memory of 2040	2224	²¹¶¡3.exe	85
PID 2224 wrote to memory of 2040	2224	²¹¶¡3.exe	85
PID 2224 wrote to memory of 2040	2224	²¹¶¡3.exe	85
PID 916 wrote to memory of 1088	916	IEXPLORE.EXE	87
PID 916 wrote to memory of 1088	916	IEXPLORE.EXE	87
PID 916 wrote to memory of 1088	916	IEXPLORE.EXE	87

C:\Users\Admin\AppData\Local\Temp\ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e.exe
"C:\Users\Admin\AppData\Local\Temp\ef643cd0d1b432d6db1e9dc20fb3868f30903a302763738a31e8f391f385b92e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Users\Admin\AppData\Local\Temp\Lock.exe
  "C:\Users\Admin\AppData\Local\Temp\Lock.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:4924
- C:\Users\Admin\AppData\Local\Temp\²¹¶¡3.exe
  "C:\Users\Admin\AppData\Local\Temp\²¹¶¡3.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2224
- - C:\program files\internet explorer\IEXPLORE.EXE
    "C:\program files\internet explorer\IEXPLORE.EXE"
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:916
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:916 CREDAT:17410 /prefetch:2
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:1088
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Windows\system32\Deleteme.bat
    3⤵
    PID:2040

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Lock.exe

Filesize
476KB

MD5
cc4d846fcf2b1f2b1bfbe7ad94b3e22a

SHA1
87bdbdda4cae536a0d7954c04dd6c980d37c07a2

SHA256
442e2ea17989049c5e715d77e9bdf33c412a31b5cab55884360afab1877b3d8d

SHA512
4e19d1b45bb5818604b625abc5808a80e8608c6572c45dfa3305a4832698d71822261d8ed73f4394b32cad2605e1926cb5f19ce9b62c901a148c4257bdf8d4d1

Download Submit
C:\Users\Admin\AppData\Local\Temp\Lock.exe

Filesize
476KB

MD5
cc4d846fcf2b1f2b1bfbe7ad94b3e22a

SHA1
87bdbdda4cae536a0d7954c04dd6c980d37c07a2

SHA256
442e2ea17989049c5e715d77e9bdf33c412a31b5cab55884360afab1877b3d8d

SHA512
4e19d1b45bb5818604b625abc5808a80e8608c6572c45dfa3305a4832698d71822261d8ed73f4394b32cad2605e1926cb5f19ce9b62c901a148c4257bdf8d4d1

Download Submit
C:\Users\Admin\AppData\Local\Temp\²¹¶¡3.exe

Filesize
18KB

MD5
ce428236b3bd1ccf0ba65a492c85c799

SHA1
b896a24425f1c8eaf033b6b87e0fc3e2a8d8cf81

SHA256
9666eaed7bd51b8242a15cb49e44efd0f3c555e5afd3c49492ec3873231c0c65

SHA512
f68abeb7a1a3021b845735e940ffed3a8e250f24dc5eaa4a69fb2429232f7bbdb1c4b2701bb7b155e3f419c96c2ecbee76cb1e079cfe5a8dcca48b82465d99ce

Download Submit
C:\Users\Admin\AppData\Local\Temp\²¹¶¡3.exe

Filesize
18KB

MD5
ce428236b3bd1ccf0ba65a492c85c799

SHA1
b896a24425f1c8eaf033b6b87e0fc3e2a8d8cf81

SHA256
9666eaed7bd51b8242a15cb49e44efd0f3c555e5afd3c49492ec3873231c0c65

SHA512
f68abeb7a1a3021b845735e940ffed3a8e250f24dc5eaa4a69fb2429232f7bbdb1c4b2701bb7b155e3f419c96c2ecbee76cb1e079cfe5a8dcca48b82465d99ce

Download Submit
C:\Windows\SysWOW64\Deleteme.bat

Filesize
130B

MD5
ea04295f020438658d6d596384596513

SHA1
f975ecf9f388a71e6de9dd91af775e5cf6aa5293

SHA256
1ed8c3f3b16226048105278ca05206adeaed7a25aea6a10b64df1e07eda5d8ce

SHA512
cfa4f9265ee84a6315ece055bcb578368ce5a67015ee1ca223efeace5456861c37dc1a92451f75d36007d464a669e5db04f07ae79ca706653c980b85b58e711f

Download Submit
memory/2224-142-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

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