gcleaner | 8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0

General

Target

8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0.exe
Size

405KB
MD5

010ca9af2d9e0822c2a294d0d8f7fe01
SHA1

f325038bf0b1671d4034f6990e9c85afa2f186d9
SHA256

8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0
SHA512

f76f862ed43b6eec954c0649048edee89f56f79e7d7a96827c9556f7626538ed78366b7d4ea87e53ceb926d111e937580b38db66addeaddb1f880756b17b3c91
SSDEEP

3072:uiFHYQ+xht6Gm6K9/wjI2Cg4f7bPO/fo66pswcd980EW+8UO4RAKmXb:9HYQwhjOT7bO/f36e9xEWJUj

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Downloads MZ/PE file

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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0.exe

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

System Information Discovery
T1082

Program crash 10 IoCs

pid	pid_target	Process	procid_target
2028	1604	WerFault.exe	83
1836	1604	WerFault.exe	83
3572	1604	WerFault.exe	83
3296	1604	WerFault.exe	83
2004	1604	WerFault.exe	83
3172	1604	WerFault.exe	83
3980	1604	WerFault.exe	83
344	1604	WerFault.exe	83
2388	1604	WerFault.exe	83
2656	1604	WerFault.exe	83

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	8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2132	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2132	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 3692	1604	8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0.exe	115
PID 1604 wrote to memory of 3692	1604	8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0.exe	115
PID 1604 wrote to memory of 3692	1604	8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0.exe	115
PID 3692 wrote to memory of 2132	3692	cmd.exe	121
PID 3692 wrote to memory of 2132	3692	cmd.exe	121
PID 3692 wrote to memory of 2132	3692	cmd.exe	121

C:\Users\Admin\AppData\Local\Temp\8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0.exe
"C:\Users\Admin\AppData\Local\Temp\8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 448
  2⤵
  - Program crash
  PID:2028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 764
  2⤵
  - Program crash
  PID:1836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 784
  2⤵
  - Program crash
  PID:3572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 784
  2⤵
  - Program crash
  PID:3296
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 856
  2⤵
  - Program crash
  PID:2004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 928
  2⤵
  - Program crash
  PID:3172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 1004
  2⤵
  - Program crash
  PID:3980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 1088
  2⤵
  - Program crash
  PID:344
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 1568
  2⤵
  - Program crash
  PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3692
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "8e1ce8ce3f77830b51e6515e2b084bb8d5b031f62a002e1526880592c34778f0.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 1588
  2⤵
  - Program crash
  PID:2656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1604 -ip 1604
1⤵
PID:3692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1604 -ip 1604
1⤵
PID:4724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1604 -ip 1604
1⤵
PID:1592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1604 -ip 1604
1⤵
PID:3248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1604 -ip 1604
1⤵
PID:1584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1604 -ip 1604
1⤵
PID:3852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1604 -ip 1604
1⤵
PID:1068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1604 -ip 1604
1⤵
PID:3524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 1604 -ip 1604
1⤵
PID:4488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1604 -ip 1604
1⤵
PID:2604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\OD2FK6XO\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1604-1-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/1604-2-0x00000000021F0000-0x000000000222C000-memory.dmp

Filesize
240KB

Download
memory/1604-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1604-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1604-13-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/1604-16-0x00000000021F0000-0x000000000222C000-memory.dmp

Filesize
240KB

Download
memory/1604-15-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/1604-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1604-29-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/1604-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1604-35-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download

Analysis

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