e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4

Analysis

max time kernel
147s
max time network
151s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
11/10/2023, 10:04

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General

Target

e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe
Size

2.9MB
MD5

c7d95cb7db916fbbbf74390c3a696c07
SHA1

9106ba864395cf2fd8f0e40e451b3640a96678f9
SHA256

e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4
SHA512

7811c75d9d6b600572517dc0dd137fa3bc7d23ac751870da89ee9f2dd90381d00df35b12f9a77601b03257a8ce1108858fa49c8520a8f8815144d47383b81c79
SSDEEP

49152:DGjg59hDq/GDBcgRtcvqo7Hs04waSbHWPC+38LrtfHXDmYIN5JSEu3S3kIpsfPsO:6jgeIB1tcvqysfwaOHWiLh/XCVNDr0Iy

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
784	is-1DOER.tmp
2612	OSKMount.exe
2308	OSKMount.exe

Loads dropped DLL 5 IoCs

pid	Process
744	e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe
784	is-1DOER.tmp
784	is-1DOER.tmp
784	is-1DOER.tmp
784	is-1DOER.tmp

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	51.159.66.125

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\OSKMount\is-M11AP.tmp	is-1DOER.tmp
File opened for modification	C:\Program Files (x86)\OSKMount\OSKMount.exe	is-1DOER.tmp
File created	C:\Program Files (x86)\OSKMount\unins000.dat	is-1DOER.tmp
File created	C:\Program Files (x86)\OSKMount\is-ASSO4.tmp	is-1DOER.tmp
File created	C:\Program Files (x86)\OSKMount\is-KIAPC.tmp	is-1DOER.tmp
File created	C:\Program Files (x86)\OSKMount\is-7GUOG.tmp	is-1DOER.tmp
File created	C:\Program Files (x86)\OSKMount\is-8H23D.tmp	is-1DOER.tmp
File created	C:\Program Files (x86)\OSKMount\is-RBO67.tmp	is-1DOER.tmp
File opened for modification	C:\Program Files (x86)\OSKMount\unins000.dat	is-1DOER.tmp

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

System Information Discovery
T1082
Runs net.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 744 wrote to memory of 784	744	e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe	28
PID 744 wrote to memory of 784	744	e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe	28
PID 744 wrote to memory of 784	744	e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe	28
PID 744 wrote to memory of 784	744	e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe	28
PID 744 wrote to memory of 784	744	e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe	28
PID 744 wrote to memory of 784	744	e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe	28
PID 744 wrote to memory of 784	744	e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe	28
PID 784 wrote to memory of 2316	784	is-1DOER.tmp	29
PID 784 wrote to memory of 2316	784	is-1DOER.tmp	29
PID 784 wrote to memory of 2316	784	is-1DOER.tmp	29
PID 784 wrote to memory of 2316	784	is-1DOER.tmp	29
PID 784 wrote to memory of 2612	784	is-1DOER.tmp	31
PID 784 wrote to memory of 2612	784	is-1DOER.tmp	31
PID 784 wrote to memory of 2612	784	is-1DOER.tmp	31
PID 784 wrote to memory of 2612	784	is-1DOER.tmp	31
PID 2316 wrote to memory of 2740	2316	net.exe	32
PID 2316 wrote to memory of 2740	2316	net.exe	32
PID 2316 wrote to memory of 2740	2316	net.exe	32
PID 2316 wrote to memory of 2740	2316	net.exe	32
PID 784 wrote to memory of 2308	784	is-1DOER.tmp	33
PID 784 wrote to memory of 2308	784	is-1DOER.tmp	33
PID 784 wrote to memory of 2308	784	is-1DOER.tmp	33
PID 784 wrote to memory of 2308	784	is-1DOER.tmp	33

C:\Users\Admin\AppData\Local\Temp\e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe
"C:\Users\Admin\AppData\Local\Temp\e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:744
- C:\Users\Admin\AppData\Local\Temp\is-8I539.tmp\is-1DOER.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-8I539.tmp\is-1DOER.tmp" /SL4 $70126 "C:\Users\Admin\AppData\Local\Temp\e31b1698e441bb54c66259bfab0cd652a238633655331dd8f0263e92ad47cad4.exe" 2851952 52224
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:784
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 28
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2316
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 28
      4⤵
      PID:2740
- - C:\Program Files (x86)\OSKMount\OSKMount.exe
    "C:\Program Files (x86)\OSKMount\OSKMount.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2612
- - C:\Program Files (x86)\OSKMount\OSKMount.exe
    "C:\Program Files (x86)\OSKMount\OSKMount.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\OSKMount\OSKMount.exe

Filesize
2.3MB

MD5
f195b27b59e09fafc22a4334d4e05654

SHA1
d58297bf93098fe5b35685bd1585fca7882dde95

SHA256
3b56d2ea8dc26b3fa20475f95519e3524689e59bc802beb51b61c305e650fde1

SHA512
f6711c4c89242108668b6b56cb0010fa32b3ad759fabb16d4017ba486532a8cee01c29484c605d9b064678ae253923855da07112c05e2b33e4d6717d1857da5c

Download Submit
C:\Program Files (x86)\OSKMount\OSKMount.exe

Filesize
2.3MB

MD5
f195b27b59e09fafc22a4334d4e05654

SHA1
d58297bf93098fe5b35685bd1585fca7882dde95

SHA256
3b56d2ea8dc26b3fa20475f95519e3524689e59bc802beb51b61c305e650fde1

SHA512
f6711c4c89242108668b6b56cb0010fa32b3ad759fabb16d4017ba486532a8cee01c29484c605d9b064678ae253923855da07112c05e2b33e4d6717d1857da5c

Download Submit
C:\Program Files (x86)\OSKMount\OSKMount.exe

Filesize
2.3MB

MD5
f195b27b59e09fafc22a4334d4e05654

SHA1
d58297bf93098fe5b35685bd1585fca7882dde95

SHA256
3b56d2ea8dc26b3fa20475f95519e3524689e59bc802beb51b61c305e650fde1

SHA512
f6711c4c89242108668b6b56cb0010fa32b3ad759fabb16d4017ba486532a8cee01c29484c605d9b064678ae253923855da07112c05e2b33e4d6717d1857da5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-8I539.tmp\is-1DOER.tmp

Filesize
652KB

MD5
f1b5055e1e80bf52a48683f85f9298ef

SHA1
26976cc0c690693084466d185c5e84da9870a778

SHA256
0b6381a1fc1ebc6594804042c8bf1ccfac7a9328bba3d3a487e571cbee298e50

SHA512
01290db6ac4dedb15d20fdc80a112b34cbce5c381c8fd262633c662e7927b314bca8063ad6109331d57feb50ed4045c05a7235347bb29edf401f9f867e9237ef

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-8I539.tmp\is-1DOER.tmp

Filesize
652KB

MD5
f1b5055e1e80bf52a48683f85f9298ef

SHA1
26976cc0c690693084466d185c5e84da9870a778

SHA256
0b6381a1fc1ebc6594804042c8bf1ccfac7a9328bba3d3a487e571cbee298e50

SHA512
01290db6ac4dedb15d20fdc80a112b34cbce5c381c8fd262633c662e7927b314bca8063ad6109331d57feb50ed4045c05a7235347bb29edf401f9f867e9237ef

Download Submit
\Program Files (x86)\OSKMount\OSKMount.exe

Filesize
2.3MB

MD5
f195b27b59e09fafc22a4334d4e05654

SHA1
d58297bf93098fe5b35685bd1585fca7882dde95

SHA256
3b56d2ea8dc26b3fa20475f95519e3524689e59bc802beb51b61c305e650fde1

SHA512
f6711c4c89242108668b6b56cb0010fa32b3ad759fabb16d4017ba486532a8cee01c29484c605d9b064678ae253923855da07112c05e2b33e4d6717d1857da5c

Download Submit
\Users\Admin\AppData\Local\Temp\is-03TH8.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-03TH8.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-03TH8.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-8I539.tmp\is-1DOER.tmp

Filesize
652KB

MD5
f1b5055e1e80bf52a48683f85f9298ef

SHA1
26976cc0c690693084466d185c5e84da9870a778

SHA256
0b6381a1fc1ebc6594804042c8bf1ccfac7a9328bba3d3a487e571cbee298e50

SHA512
01290db6ac4dedb15d20fdc80a112b34cbce5c381c8fd262633c662e7927b314bca8063ad6109331d57feb50ed4045c05a7235347bb29edf401f9f867e9237ef

Download Submit
memory/744-47-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/744-1-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/784-37-0x0000000003950000-0x0000000003B9C000-memory.dmp

Filesize
2.3MB

Download
memory/784-8-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/784-52-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/784-48-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/2308-65-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-71-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-99-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-95-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-50-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-92-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-56-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-59-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-62-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-89-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-68-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-46-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-74-0x0000000002200000-0x0000000002249000-memory.dmp

Filesize
292KB

Download
memory/2308-75-0x0000000002200000-0x0000000002249000-memory.dmp

Filesize
292KB

Download
memory/2308-79-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-82-0x0000000002200000-0x0000000002249000-memory.dmp

Filesize
292KB

Download
memory/2308-83-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2308-86-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2612-43-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2612-40-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2612-44-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download
memory/2612-39-0x0000000000400000-0x000000000064C000-memory.dmp

Filesize
2.3MB

Download