nymaim | 6120c2cf80e60faf7c9f71ae783543891ecad367e9601081adbcfd208774efc2

General

Target

6120c2cf80e60faf7c9f71ae783543891ecad367e9601081adbcfd208774efc2.exe
Size

2.4MB
MD5

35449de6e51bf33a2b8a890d3e89e6b0
SHA1

baabc5d03f57ab6868990704cdea1682dda05594
SHA256

6120c2cf80e60faf7c9f71ae783543891ecad367e9601081adbcfd208774efc2
SHA512

7123d748d1f9d047846c808f8cd1d51293ceac12160c282e86144dce43bd1e63544d48e7d3e51240af564201ee85c7e67a4706919815cdfd723a4c78c0f2dbd4
SSDEEP

49152:Z2yJ+Jl4uoAOJcir3/p22xV1yokv7lAiywVqT+cZb+reBeqD4RA5hq:My4pqyNzlbyw2+mxfUKDq

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
2060	is-AAU5H.tmp
4308	dwsearcher47.exe
4048	xhWV8wNm.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	dwsearcher47.exe

Loads dropped DLL 1 IoCs

pid	Process
2060	is-AAU5H.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)\dwSearcher\unins000.dat	is-AAU5H.tmp
File created	C:\Program Files (x86)\dwSearcher\is-O855A.tmp	is-AAU5H.tmp
File created	C:\Program Files (x86)\dwSearcher\is-3CPT7.tmp	is-AAU5H.tmp
File created	C:\Program Files (x86)\dwSearcher\is-NHPD5.tmp	is-AAU5H.tmp
File opened for modification	C:\Program Files (x86)\dwSearcher\dwsearcher47.exe	is-AAU5H.tmp
File created	C:\Program Files (x86)\dwSearcher\is-56U4P.tmp	is-AAU5H.tmp
File created	C:\Program Files (x86)\dwSearcher\is-5FUMT.tmp	is-AAU5H.tmp
File created	C:\Program Files (x86)\dwSearcher\is-CH5LP.tmp	is-AAU5H.tmp
File created	C:\Program Files (x86)\dwSearcher\is-JEU82.tmp	is-AAU5H.tmp
File created	C:\Program Files (x86)\dwSearcher\is-1BAUG.tmp	is-AAU5H.tmp
File created	C:\Program Files (x86)\dwSearcher\is-LQ5FT.tmp	is-AAU5H.tmp
File opened for modification	C:\Program Files (x86)\dwSearcher\unins000.dat	is-AAU5H.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
4840	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4308	dwsearcher47.exe
4308	dwsearcher47.exe
4308	dwsearcher47.exe
4308	dwsearcher47.exe
4308	dwsearcher47.exe
4308	dwsearcher47.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4840	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4100 wrote to memory of 2060	4100	6120c2cf80e60faf7c9f71ae783543891ecad367e9601081adbcfd208774efc2.exe	81
PID 4100 wrote to memory of 2060	4100	6120c2cf80e60faf7c9f71ae783543891ecad367e9601081adbcfd208774efc2.exe	81
PID 4100 wrote to memory of 2060	4100	6120c2cf80e60faf7c9f71ae783543891ecad367e9601081adbcfd208774efc2.exe	81
PID 2060 wrote to memory of 4308	2060	is-AAU5H.tmp	82
PID 2060 wrote to memory of 4308	2060	is-AAU5H.tmp	82
PID 2060 wrote to memory of 4308	2060	is-AAU5H.tmp	82
PID 4308 wrote to memory of 4048	4308	dwsearcher47.exe	86
PID 4308 wrote to memory of 4048	4308	dwsearcher47.exe	86
PID 4308 wrote to memory of 4048	4308	dwsearcher47.exe	86
PID 4308 wrote to memory of 5068	4308	dwsearcher47.exe	91
PID 4308 wrote to memory of 5068	4308	dwsearcher47.exe	91
PID 4308 wrote to memory of 5068	4308	dwsearcher47.exe	91
PID 5068 wrote to memory of 4840	5068	cmd.exe	93
PID 5068 wrote to memory of 4840	5068	cmd.exe	93
PID 5068 wrote to memory of 4840	5068	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\6120c2cf80e60faf7c9f71ae783543891ecad367e9601081adbcfd208774efc2.exe
"C:\Users\Admin\AppData\Local\Temp\6120c2cf80e60faf7c9f71ae783543891ecad367e9601081adbcfd208774efc2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4100
- C:\Users\Admin\AppData\Local\Temp\is-KFELK.tmp\is-AAU5H.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-KFELK.tmp\is-AAU5H.tmp" /SL4 $601BC "C:\Users\Admin\AppData\Local\Temp\6120c2cf80e60faf7c9f71ae783543891ecad367e9601081adbcfd208774efc2.exe" 2267369 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\Program Files (x86)\dwSearcher\dwsearcher47.exe
    "C:\Program Files (x86)\dwSearcher\dwsearcher47.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4308
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\xhWV8wNm.exe
      4⤵
      Executes dropped EXE
      PID:4048
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "dwsearcher47.exe" /f & erase "C:\Program Files (x86)\dwSearcher\dwsearcher47.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:5068
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "dwsearcher47.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4840

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)\dwSearcher\dwsearcher47.exe

Filesize
4.0MB

MD5
81c504e71a591fb91c910121a2051b0c

SHA1
139bc08befc9c6197b8306d96c3f8e65b9a91b4a

SHA256
b214c05b14e3882ac8ea553d27823fb8089ea0c39c6d546d8aeb8035f53b96ac

SHA512
643c2a33220ad4e223276b84f32e3f41b2c92cfc4cb4ceaf83524d2b3f45dfe175ed99ecb987d1cb64d1889ba185bdcd25ec1a2c6308f5eef8f755d40d2b4377

Download Submit
C:\Program Files (x86)\dwSearcher\dwsearcher47.exe

Filesize
4.0MB

MD5
81c504e71a591fb91c910121a2051b0c

SHA1
139bc08befc9c6197b8306d96c3f8e65b9a91b4a

SHA256
b214c05b14e3882ac8ea553d27823fb8089ea0c39c6d546d8aeb8035f53b96ac

SHA512
643c2a33220ad4e223276b84f32e3f41b2c92cfc4cb4ceaf83524d2b3f45dfe175ed99ecb987d1cb64d1889ba185bdcd25ec1a2c6308f5eef8f755d40d2b4377

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-KFELK.tmp\is-AAU5H.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-KFELK.tmp\is-AAU5H.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\xhWV8wNm.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\xhWV8wNm.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/4100-137-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4100-155-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4100-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4308-143-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/4308-142-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/4308-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4308-151-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download
memory/4308-154-0x0000000000400000-0x00000000015F9000-memory.dmp

Filesize
18.0MB

Download

Analysis

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