nymaim | e46c3878b9756651b0cf096896e98f0197da461723cd4332373142db82fa02b3

General

Target

file.exe
Size

2.3MB
MD5

bce84b0c69a4dcfafca98646f5edfb89
SHA1

40046451c8f4fa546c2d9becaf1e45eea6344fce
SHA256

e46c3878b9756651b0cf096896e98f0197da461723cd4332373142db82fa02b3
SHA512

1c82a3e148b69e26988779905462edd29a1278dbe4f67fe7fcb34877688f564c91a25349fd9e14141b95a17a463e7d974b92de0daa80a134e165512bac42aef8
SSDEEP

49152:Z2YesroB2nPLt49MhFNZyrgTKuSa9Mb4P85Yzo6U1Y26KZ2HHv9EA5hq:Mnyk+kMHNMrnuls4PJo6UJ72HHv9rDq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.15.156.54

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
1208	is-D28AP.tmp
3324	dxsearcher48.exe
3084	s09o1N3GBf.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	dxsearcher48.exe

Loads dropped DLL 1 IoCs

pid	Process
1208	is-D28AP.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 Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\dxSearcher\unins000.dat	is-D28AP.tmp
File created	C:\Program Files (x86)\dxSearcher\is-VALS5.tmp	is-D28AP.tmp
File created	C:\Program Files (x86)\dxSearcher\is-BP4BE.tmp	is-D28AP.tmp
File created	C:\Program Files (x86)\dxSearcher\is-974R2.tmp	is-D28AP.tmp
File created	C:\Program Files (x86)\dxSearcher\is-3RFRT.tmp	is-D28AP.tmp
File opened for modification	C:\Program Files (x86)\dxSearcher\unins000.dat	is-D28AP.tmp
File created	C:\Program Files (x86)\dxSearcher\is-7L7PF.tmp	is-D28AP.tmp
File created	C:\Program Files (x86)\dxSearcher\is-CS12Q.tmp	is-D28AP.tmp
File created	C:\Program Files (x86)\dxSearcher\is-NOS7M.tmp	is-D28AP.tmp
File created	C:\Program Files (x86)\dxSearcher\is-PDRFB.tmp	is-D28AP.tmp
File created	C:\Program Files (x86)\dxSearcher\is-K5L1T.tmp	is-D28AP.tmp
File opened for modification	C:\Program Files (x86)\dxSearcher\dxsearcher48.exe	is-D28AP.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
2744	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3324	dxsearcher48.exe
3324	dxsearcher48.exe
3324	dxsearcher48.exe
3324	dxsearcher48.exe
3324	dxsearcher48.exe
3324	dxsearcher48.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 1208	3044	file.exe	84
PID 3044 wrote to memory of 1208	3044	file.exe	84
PID 3044 wrote to memory of 1208	3044	file.exe	84
PID 1208 wrote to memory of 3324	1208	is-D28AP.tmp	85
PID 1208 wrote to memory of 3324	1208	is-D28AP.tmp	85
PID 1208 wrote to memory of 3324	1208	is-D28AP.tmp	85
PID 3324 wrote to memory of 3084	3324	dxsearcher48.exe	86
PID 3324 wrote to memory of 3084	3324	dxsearcher48.exe	86
PID 3324 wrote to memory of 3084	3324	dxsearcher48.exe	86
PID 3324 wrote to memory of 3272	3324	dxsearcher48.exe	94
PID 3324 wrote to memory of 3272	3324	dxsearcher48.exe	94
PID 3324 wrote to memory of 3272	3324	dxsearcher48.exe	94
PID 3272 wrote to memory of 2744	3272	cmd.exe	96
PID 3272 wrote to memory of 2744	3272	cmd.exe	96
PID 3272 wrote to memory of 2744	3272	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Users\Admin\AppData\Local\Temp\is-4NS5V.tmp\is-D28AP.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-4NS5V.tmp\is-D28AP.tmp" /SL4 $B01C0 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2148011 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1208
- - C:\Program Files (x86)\dxSearcher\dxsearcher48.exe
    "C:\Program Files (x86)\dxSearcher\dxsearcher48.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3324
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\s09o1N3GBf.exe
      4⤵
      Executes dropped EXE
      PID:3084
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "dxsearcher48.exe" /f & erase "C:\Program Files (x86)\dxSearcher\dxsearcher48.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3272
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "dxsearcher48.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2744

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\dxSearcher\dxsearcher48.exe

Filesize
3.8MB

MD5
1e22294942c20efa40d29570f6abaf0c

SHA1
dcedc4cf1ebc83a30f518b5a89f7d725edcad969

SHA256
734d32830e1c1ce51837bb9507f0459012c78d448de47b1f4bf2ac12cf6e1ae5

SHA512
52061f2055f57ac97d97626d27c72f9e7871a772fc58e3119075cb19e6dca16cd5ae1943e11172ea368e24e95c7d29a1b9f768644b3bc412a4fc241379623e08

Download Submit
C:\Program Files (x86)\dxSearcher\dxsearcher48.exe

Filesize
3.8MB

MD5
1e22294942c20efa40d29570f6abaf0c

SHA1
dcedc4cf1ebc83a30f518b5a89f7d725edcad969

SHA256
734d32830e1c1ce51837bb9507f0459012c78d448de47b1f4bf2ac12cf6e1ae5

SHA512
52061f2055f57ac97d97626d27c72f9e7871a772fc58e3119075cb19e6dca16cd5ae1943e11172ea368e24e95c7d29a1b9f768644b3bc412a4fc241379623e08

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-4NS5V.tmp\is-D28AP.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-4NS5V.tmp\is-D28AP.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-CBONU.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\s09o1N3GBf.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\s09o1N3GBf.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1208-134-0x0000000000000000-mapping.dmp

Download
memory/2744-154-0x0000000000000000-mapping.dmp

Download
memory/3044-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3044-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3044-138-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3084-145-0x0000000000000000-mapping.dmp

Download
memory/3272-153-0x0000000000000000-mapping.dmp

Download
memory/3324-143-0x0000000000400000-0x00000000015C7000-memory.dmp

Filesize
17.8MB

Download
memory/3324-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3324-152-0x0000000000400000-0x00000000015C7000-memory.dmp

Filesize
17.8MB

Download
memory/3324-144-0x0000000000400000-0x00000000015C7000-memory.dmp

Filesize
17.8MB

Download
memory/3324-142-0x0000000000400000-0x00000000015C7000-memory.dmp

Filesize
17.8MB

Download
memory/3324-155-0x0000000000400000-0x00000000015C7000-memory.dmp

Filesize
17.8MB

Download
memory/3324-139-0x0000000000000000-mapping.dmp

Download

Analysis

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