nymaim | a9247197c612ffbebe00398e0fcb2d48904f0aae052acf6c7681632293394d82

Analysis

max time kernel
145s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
08/12/2022, 17:16

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General

Target
file.exe
Size 2.3MB
Sample221208-vs5jcsde7v
SHA256 a9247197c612ffbebe00398e0fcb2d48904f0aae052acf6c7681632293394d82
MD5 1b23e838f91dc816146b46a1a8fd4897
SHA1 c2865199e65fa3a179a2df1660551d98e12d72c2
SHA512 dd9d05e2c7f9fd74e97715654652c1a417942d8535179ecd988efdcbe20b3e46984da8b4b498f879c9b157b9c303c6b23f630653a1a4edd37eb2d6378c56c3a3
SSDEEP 49152:62Bmn18r7OzpBqOubhEyt3ZHJwsqBTzNT6DQtV2QIZwN41kt:6Cmn1nNmEyHHJyT56DgIK
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
2380	is-QRHNR.tmp
3012	IntFolders.exe
3560	hXMBo.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	IntFolders.exe

Loads dropped DLL 1 IoCs

pid	Process
2380	is-QRHNR.tmp

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 System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{4A4EC71D-469D-4187-B695-F7DCFFA30CF4}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{6803B55C-35D9-48F1-8AFB-974820F65AF5}.catalogItem	svchost.exe

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-QRHNR.tmp
File created	C:\Program Files (x86)\PrintFolders\is-1PMAF.tmp	is-QRHNR.tmp
File created	C:\Program Files (x86)\PrintFolders\is-RKJPU.tmp	is-QRHNR.tmp
File created	C:\Program Files (x86)\PrintFolders\is-7S8TE.tmp	is-QRHNR.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-QRHNR.tmp
File created	C:\Program Files (x86)\PrintFolders\is-98SIB.tmp	is-QRHNR.tmp
File created	C:\Program Files (x86)\PrintFolders\is-KM814.tmp	is-QRHNR.tmp
File created	C:\Program Files (x86)\PrintFolders\is-PALBA.tmp	is-QRHNR.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\IntFolders.exe	is-QRHNR.tmp

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4996	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3012	IntFolders.exe
3012	IntFolders.exe
3012	IntFolders.exe
3012	IntFolders.exe
3012	IntFolders.exe
3012	IntFolders.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4996	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 2380	1544	file.exe	75
PID 1544 wrote to memory of 2380	1544	file.exe	75
PID 1544 wrote to memory of 2380	1544	file.exe	75
PID 2380 wrote to memory of 3012	2380	is-QRHNR.tmp	76
PID 2380 wrote to memory of 3012	2380	is-QRHNR.tmp	76
PID 2380 wrote to memory of 3012	2380	is-QRHNR.tmp	76
PID 3012 wrote to memory of 3560	3012	IntFolders.exe	77
PID 3012 wrote to memory of 3560	3012	IntFolders.exe	77
PID 3012 wrote to memory of 3560	3012	IntFolders.exe	77
PID 3012 wrote to memory of 1896	3012	IntFolders.exe	88
PID 3012 wrote to memory of 1896	3012	IntFolders.exe	88
PID 3012 wrote to memory of 1896	3012	IntFolders.exe	88
PID 1896 wrote to memory of 4996	1896	cmd.exe	90
PID 1896 wrote to memory of 4996	1896	cmd.exe	90
PID 1896 wrote to memory of 4996	1896	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Users\Admin\AppData\Local\Temp\is-SCHMN.tmp\is-QRHNR.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-SCHMN.tmp\is-QRHNR.tmp" /SL4 $F0062 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2218218 73728
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2380
- - C:\Program Files (x86)\PrintFolders\IntFolders.exe
    "C:\Program Files (x86)\PrintFolders\IntFolders.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3012
  - - C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\hXMBo.exe
      4⤵
      Executes dropped EXE
      PID:3560
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "IntFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\IntFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1896
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "IntFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4996

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:1508

Network

MITRE ATT&CK Enterprise v6

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

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Downloads

IntFolders.exe

Path C:\Program Files (x86)\PrintFolders\IntFolders.exe
Size 3.5MB
SHA256 cb23772a15b5fce42860bbbb105aca7fd34f4d3263b909766a5909a4d4bfc69b
MD5 22804ec4a744cd15d2c29de9a7c506d4
SHA1 597f6349c136a71a0234e13df973a1b603704b9f
SHA512 6515fb877f63c49c3cd70be7a8338b7a3513846e4e43e245cba257d42a7e2d644e89c97cb55f405211d06596136864fa70ce33428fafd60af68ef87cd5292573
SSDEEP 49152:roLWldbHX/R7fG4qRndE7biY/38O1gE8ZyNIXS:roLWldbHXp7fGrRndE7bD/37yE8ZyYS
MD5 SHA1 SHA512 SSDEEP

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IntFolders.exe

Path C:\Program Files (x86)\PrintFolders\IntFolders.exe
Size 3.5MB
SHA256 cb23772a15b5fce42860bbbb105aca7fd34f4d3263b909766a5909a4d4bfc69b
MD5 22804ec4a744cd15d2c29de9a7c506d4
SHA1 597f6349c136a71a0234e13df973a1b603704b9f
SHA512 6515fb877f63c49c3cd70be7a8338b7a3513846e4e43e245cba257d42a7e2d644e89c97cb55f405211d06596136864fa70ce33428fafd60af68ef87cd5292573
SSDEEP 49152:roLWldbHX/R7fG4qRndE7biY/38O1gE8ZyNIXS:roLWldbHXp7fGrRndE7bD/37yE8ZyYS
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-CUGJ5.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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is-QRHNR.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-SCHMN.tmp\is-QRHNR.tmp
Size 665KB
SHA256 2a841ad3820292ff2ab96429635062d0984d0b221e8bd7650777a1c51043b722
MD5 21efb90aabcda42c1232f008bd66fd99
SHA1 563835721536bbd8310eb1dc2fa18966ddffff3d
SHA512 106432d5d58bd2f904cbb9f28771c7b95ccbdd7cdf506b190f5968dbf552ae4ed54cd2f46624ab47cc730c565b7d8d7de7cc51609540df05d0a46c932c20c36e
SSDEEP 12288:/h5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvX4xO6:p5NoqWolrP837JzHvA6yknyWFxvoxO6
MD5 SHA1 SHA512 SSDEEP

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is-QRHNR.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-SCHMN.tmp\is-QRHNR.tmp
Size 665KB
SHA256 2a841ad3820292ff2ab96429635062d0984d0b221e8bd7650777a1c51043b722
MD5 21efb90aabcda42c1232f008bd66fd99
SHA1 563835721536bbd8310eb1dc2fa18966ddffff3d
SHA512 106432d5d58bd2f904cbb9f28771c7b95ccbdd7cdf506b190f5968dbf552ae4ed54cd2f46624ab47cc730c565b7d8d7de7cc51609540df05d0a46c932c20c36e
SSDEEP 12288:/h5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvX4xO6:p5NoqWolrP837JzHvA6yknyWFxvoxO6
MD5 SHA1 SHA512 SSDEEP

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hXMBo.exe

Path C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\hXMBo.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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hXMBo.exe

Path C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\hXMBo.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/1544-137-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/1544-156-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/1544-132-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/3012-143-0x0000000000400000-0x000000000157C000-memory.dmp

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memory/3012-144-0x0000000000400000-0x000000000157C000-memory.dmp

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memory/3012-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3012-152-0x0000000000400000-0x000000000157C000-memory.dmp

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memory/3012-142-0x0000000000400000-0x000000000157C000-memory.dmp

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memory/3012-155-0x0000000000400000-0x000000000157C000-memory.dmp

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