gcleaner | 171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f

General

Target

171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f.exe
Size

404KB
MD5

87014027f4915599f2bdac58a47ab869
SHA1

23ce03b717901d01a98df9c8df4f1057753c8d87
SHA256

171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f
SHA512

7763799175502c97a87c7c8a3e3ca706b3d8ea52ec283e0048581ce7a432e67cd91f25390bb52c35b6408010e03b6a33ca6a77daf20668b569b0854b776834f1
SSDEEP

3072:q1otAXhjgBRBPW9IRpC7ObFbBhUV7WMKYJqVK9me9gSag1LXfVC50QCuBWstvi0h:LKRjYfPzFwVFme9taILXfk50ruxv/a

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f.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
4908	1528	WerFault.exe	90
4356	1528	WerFault.exe	90
4056	1528	WerFault.exe	90
1688	1528	WerFault.exe	90
3700	1528	WerFault.exe	90
3956	1528	WerFault.exe	90
4496	1528	WerFault.exe	90
4732	1528	WerFault.exe	90
3900	1528	WerFault.exe	90
1132	1528	WerFault.exe	90

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	171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f.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
3084	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3084	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1528 wrote to memory of 2528	1528	171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f.exe	125
PID 1528 wrote to memory of 2528	1528	171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f.exe	125
PID 1528 wrote to memory of 2528	1528	171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f.exe	125
PID 2528 wrote to memory of 3084	2528	cmd.exe	129
PID 2528 wrote to memory of 3084	2528	cmd.exe	129
PID 2528 wrote to memory of 3084	2528	cmd.exe	129

C:\Users\Admin\AppData\Local\Temp\171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f.exe
"C:\Users\Admin\AppData\Local\Temp\171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 448
  2⤵
  - Program crash
  PID:4908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 756
  2⤵
  - Program crash
  PID:4356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 784
  2⤵
  - Program crash
  PID:4056
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 816
  2⤵
  - Program crash
  PID:1688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 864
  2⤵
  - Program crash
  PID:3700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 928
  2⤵
  - Program crash
  PID:3956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 1004
  2⤵
  - Program crash
  PID:4496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 1032
  2⤵
  - Program crash
  PID:4732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 1568
  2⤵
  - Program crash
  PID:3900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2528
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "171759e77168aaf166f16538379616db5f0fe7bee7fdf887b045ed7f6028f09f.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 512
  2⤵
  - Program crash
  PID:1132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1528 -ip 1528
1⤵
PID:952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1528 -ip 1528
1⤵
PID:3348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1528 -ip 1528
1⤵
PID:4376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1528 -ip 1528
1⤵
PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1528 -ip 1528
1⤵
PID:3196

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4156,i,9445584274764997943,12714240264001792460,262144 --variations-seed-version --mojo-platform-channel-handle=4060 /prefetch:8
1⤵
PID:5044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1528 -ip 1528
1⤵
PID:2156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1528 -ip 1528
1⤵
PID:2232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1528 -ip 1528
1⤵
PID:4528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1528 -ip 1528
1⤵
PID:4336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1528 -ip 1528
1⤵
PID:1152

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\0KP8BKDN\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1528-2-0x0000000002210000-0x000000000224C000-memory.dmp

Filesize
240KB

Download
memory/1528-1-0x0000000000870000-0x0000000000970000-memory.dmp

Filesize
1024KB

Download
memory/1528-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1528-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1528-13-0x0000000000870000-0x0000000000970000-memory.dmp

Filesize
1024KB

Download
memory/1528-14-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/1528-16-0x0000000002210000-0x000000000224C000-memory.dmp

Filesize
240KB

Download
memory/1528-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1528-35-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/1528-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

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